diff --git a/docs/LibraryItemModelDemo.js b/docs/LibraryItemModelDemo.js
index da7428ae..b4d03827 100644
--- a/docs/LibraryItemModelDemo.js
+++ b/docs/LibraryItemModelDemo.js
@@ -68,6 +68,7 @@ new LibraryItem({
         discNumFromFilename: 1,
         manuallyVerified: false,
         exclude: false,
+        invalid: false,
         format: "MP2/3 (MPEG audio layer 2/3)",
         duration: 2342342,
         bitRate: 324234,
@@ -78,7 +79,7 @@ new LibraryItem({
         channelLayout: "mono",
         chapters: [],
         embeddedCoverArt: 'jpeg', // Video stream codec ['mjpeg', 'jpeg', 'png'] or null
-        metatags: { // AudioMetatags.js : (Metatags/ID3 tags - only stores values that are found)
+        metaTags: { // AudioMetaTags.js
           tagAlbum: '',
           tagArtist: '',
           tagGenre: '',
@@ -101,7 +102,7 @@ new LibraryItem({
           tagASIN: ''
         },
         addedAt: 1646784672127,
-        lastUpdate: 1646784672127
+        updatedAt: 1646784672127
       }
     ],
     ebookFiles: [
@@ -119,7 +120,7 @@ new LibraryItem({
         },
         ebookFormat: 'mobi',
         addedAt: 1646784672127,
-        lastUpdate: 1646784672127
+        updatedAt: 1646784672127
       }
     ],
     chapters: [
@@ -145,7 +146,7 @@ new LibraryItem({
         size: 1197449516
       },
       addedAt: 1646784672127,
-      lastUpdate: 1646784672127
+      updatedAt: 1646784672127
     },
     { // LibraryFile.js
       ino: "55450570412017066",
@@ -160,7 +161,7 @@ new LibraryItem({
         size: 1197449516
       },
       addedAt: 1646784672127,
-      lastUpdate: 1646784672127
+      updatedAt: 1646784672127
     }
   ]
 })
\ No newline at end of file
diff --git a/server/Db.js b/server/Db.js
index 035ccc9a..a1dcb97a 100644
--- a/server/Db.js
+++ b/server/Db.js
@@ -4,38 +4,43 @@ const fs = require('fs-extra')
 const jwt = require('jsonwebtoken')
 const Logger = require('./Logger')
 const { version } = require('../package.json')
-const Audiobook = require('./objects/Audiobook')
+// const Audiobook = require('./objects/Audiobook')
+const LibraryItem = require('./objects/LibraryItem')
 const User = require('./objects/User')
 const UserCollection = require('./objects/UserCollection')
 const Library = require('./objects/Library')
-const Author = require('./objects/Author')
+const Author = require('./objects/entities/Author')
+const Series = require('./objects/entities/Series')
 const ServerSettings = require('./objects/ServerSettings')
 
 class Db {
   constructor() {
-    this.AudiobooksPath = Path.join(global.ConfigPath, 'audiobooks')
+    this.LibraryItemsPath = Path.join(global.ConfigPath, 'libraryItems')
     this.UsersPath = Path.join(global.ConfigPath, 'users')
     this.SessionsPath = Path.join(global.ConfigPath, 'sessions')
     this.LibrariesPath = Path.join(global.ConfigPath, 'libraries')
     this.SettingsPath = Path.join(global.ConfigPath, 'settings')
     this.CollectionsPath = Path.join(global.ConfigPath, 'collections')
     this.AuthorsPath = Path.join(global.ConfigPath, 'authors')
+    this.SeriesPath = Path.join(global.ConfigPath, 'series')
 
-    this.audiobooksDb = new njodb.Database(this.AudiobooksPath)
+    this.libraryItemsDb = new njodb.Database(this.LibraryItemsPath)
     this.usersDb = new njodb.Database(this.UsersPath)
     this.sessionsDb = new njodb.Database(this.SessionsPath)
     this.librariesDb = new njodb.Database(this.LibrariesPath, { datastores: 2 })
     this.settingsDb = new njodb.Database(this.SettingsPath, { datastores: 2 })
     this.collectionsDb = new njodb.Database(this.CollectionsPath, { datastores: 2 })
     this.authorsDb = new njodb.Database(this.AuthorsPath)
+    this.seriesDb = new njodb.Database(this.SeriesPath, { datastores: 2 })
 
+    this.libraryItems = []
     this.users = []
     this.sessions = []
     this.libraries = []
-    this.audiobooks = []
     this.settings = []
     this.collections = []
     this.authors = []
+    this.series = []
 
     this.serverSettings = null
 
@@ -46,22 +51,24 @@ class Db {
   getEntityDb(entityName) {
     if (entityName === 'user') return this.usersDb
     else if (entityName === 'session') return this.sessionsDb
-    else if (entityName === 'audiobook') return this.audiobooksDb
+    else if (entityName === 'libraryItem') return this.libraryItemsDb
     else if (entityName === 'library') return this.librariesDb
     else if (entityName === 'settings') return this.settingsDb
     else if (entityName === 'collection') return this.collectionsDb
     else if (entityName === 'author') return this.authorsDb
+    else if (entityName === 'series') return this.seriesDb
     return null
   }
 
   getEntityArrayKey(entityName) {
     if (entityName === 'user') return 'users'
     else if (entityName === 'session') return 'sessions'
-    else if (entityName === 'audiobook') return 'audiobooks'
+    else if (entityName === 'libraryItem') return 'libraryItems'
     else if (entityName === 'library') return 'libraries'
     else if (entityName === 'settings') return 'settings'
     else if (entityName === 'collection') return 'collections'
     else if (entityName === 'author') return 'authors'
+    else if (entityName === 'series') return 'series'
     return null
   }
 
@@ -93,13 +100,14 @@ class Db {
   }
 
   reinit() {
-    this.audiobooksDb = new njodb.Database(this.AudiobooksPath)
+    this.libraryItemsDb = new njodb.Database(this.LibraryItemsPath)
     this.usersDb = new njodb.Database(this.UsersPath)
     this.sessionsDb = new njodb.Database(this.SessionsPath)
     this.librariesDb = new njodb.Database(this.LibrariesPath, { datastores: 2 })
     this.settingsDb = new njodb.Database(this.SettingsPath, { datastores: 2 })
     this.collectionsDb = new njodb.Database(this.CollectionsPath, { datastores: 2 })
     this.authorsDb = new njodb.Database(this.AuthorsPath)
+    this.seriesDb = new njodb.Database(this.SeriesPath, { datastores: 2 })
     return this.init()
   }
 
@@ -129,9 +137,9 @@ class Db {
   }
 
   async load() {
-    var p1 = this.audiobooksDb.select(() => true).then((results) => {
-      this.audiobooks = results.data.map(a => new Audiobook(a))
-      Logger.info(`[DB] ${this.audiobooks.length} Audiobooks Loaded`)
+    var p1 = this.libraryItemsDb.select(() => true).then((results) => {
+      this.libraryItems = results.data.map(a => new LibraryItem(a))
+      Logger.info(`[DB] ${this.libraryItems.length} Library Items Loaded`)
     })
     var p2 = this.usersDb.select(() => true).then((results) => {
       this.users = results.data.map(u => new User(u))
@@ -163,7 +171,11 @@ class Db {
       this.authors = results.data.map(l => new Author(l))
       Logger.info(`[DB] ${this.authors.length} Authors Loaded`)
     })
-    await Promise.all([p1, p2, p3, p4, p5, p6])
+    var p7 = this.seriesDb.select(() => true).then((results) => {
+      this.series = results.data.map(l => new Series(l))
+      Logger.info(`[DB] ${this.series.length} Series Loaded`)
+    })
+    await Promise.all([p1, p2, p3, p4, p5, p6, p7])
 
     // Update server version in server settings
     if (this.previousVersion) {
@@ -181,7 +193,7 @@ class Db {
       Logger.error(`[Db] Invalid audiobook object passed to updateAudiobook`, audiobook)
     }
 
-    return this.audiobooksDb.update((record) => record.id === audiobook.id, () => audiobook).then((results) => {
+    return this.libraryItemsDb.update((record) => record.id === audiobook.id, () => audiobook).then((results) => {
       Logger.debug(`[DB] Audiobook updated ${results.updated}`)
       return true
     }).catch((error) => {
@@ -202,7 +214,7 @@ class Db {
       return null
     }))
 
-    return this.audiobooksDb.insert(audiobooks).then((results) => {
+    return this.libraryItemsDb.insert(audiobooks).then((results) => {
       Logger.debug(`[DB] Audiobooks inserted ${results.inserted}`)
       this.audiobooks = this.audiobooks.concat(audiobooks)
       return true
@@ -321,14 +333,14 @@ class Db {
     })
   }
 
-  recreateAudiobookDb() {
-    return this.audiobooksDb.drop().then((results) => {
-      Logger.info(`[DB] Dropped audiobook db`, results)
-      this.audiobooksDb = new njodb.Database(this.AudiobooksPath)
-      this.audiobooks = []
+  recreateLibraryItemsDb() {
+    return this.libraryItemsDb.drop().then((results) => {
+      Logger.info(`[DB] Dropped library items db`, results)
+      this.libraryItemsDb = new njodb.Database(this.LibraryItemsPath)
+      this.libraryItems = []
       return true
     }).catch((error) => {
-      Logger.error(`[DB] Failed to drop audiobook db`, error)
+      Logger.error(`[DB] Failed to drop library items db`, error)
       return false
     })
   }
diff --git a/server/Server.js b/server/Server.js
index 2838f21e..44d6cb64 100644
--- a/server/Server.js
+++ b/server/Server.js
@@ -12,6 +12,7 @@ const { version } = require('../package.json')
 const { ScanResult } = require('./utils/constants')
 const filePerms = require('./utils/filePerms')
 const { secondsToTimestamp } = require('./utils/index')
+const dbMigration = require('./utils/dbMigration')
 const Logger = require('./Logger')
 
 // Classes
@@ -75,15 +76,6 @@ class Server {
     this.clients = {}
   }
 
-  get audiobooks() {
-    return this.db.audiobooks
-  }
-  get libraries() {
-    return this.db.libraries
-  }
-  get serverSettings() {
-    return this.db.serverSettings
-  }
   get usersOnline() {
     return Object.values(this.clients).filter(c => c.user).map(client => {
       return client.user.toJSONForPublic(this.streamManager.streams)
@@ -121,11 +113,20 @@ class Server {
     await this.streamManager.removeOrphanStreams()
     await this.downloadManager.removeOrphanDownloads()
 
+
     await this.db.init()
+
+    if (version.localeCompare('1.7.3') < 0) {
+      await dbMigration(this.db)
+      // TODO: Eventually remove audiobooks db when stable
+    }
+
     this.auth.init()
 
-    await this.checkUserAudiobookData()
-    await this.purgeMetadata()
+    // TODO: Implement method to remove old user auidobook data and book metadata folders
+    // await this.checkUserAudiobookData()
+    // await this.purgeMetadata()
+
     await this.backupManager.init()
     await this.logManager.init()
 
@@ -143,7 +144,7 @@ class Server {
       Logger.info(`[Server] Watcher is disabled`)
       this.watcher.disabled = true
     } else {
-      this.watcher.initWatcher(this.libraries)
+      this.watcher.initWatcher(this.db.libraries)
       this.watcher.on('files', this.filesChanged.bind(this))
     }
   }
@@ -180,7 +181,7 @@ class Server {
 
     // Static file routes
     app.get('/lib/:library/:folder/*', this.authMiddleware.bind(this), (req, res) => {
-      var library = this.libraries.find(lib => lib.id === req.params.library)
+      var library = this.db.libraries.find(lib => lib.id === req.params.library)
       if (!library) return res.sendStatus(404)
       var folder = library.folders.find(fol => fol.id === req.params.folder)
       if (!folder) return res.status(404).send('Folder not found')
@@ -192,7 +193,7 @@ class Server {
 
     // Book static file routes
     app.get('/s/book/:id/*', this.authMiddleware.bind(this), (req, res) => {
-      var audiobook = this.audiobooks.find(ab => ab.id === req.params.id)
+      var audiobook = this.db.audiobooks.find(ab => ab.id === req.params.id)
       if (!audiobook) return res.status(404).send('Book not found with id ' + req.params.id)
 
       var remainingPath = req.params['0']
@@ -202,7 +203,7 @@ class Server {
 
     // EBook static file routes
     app.get('/ebook/:library/:folder/*', (req, res) => {
-      var library = this.libraries.find(lib => lib.id === req.params.library)
+      var library = this.db.libraries.find(lib => lib.id === req.params.library)
       if (!library) return res.sendStatus(404)
       var folder = library.folders.find(fol => fol.id === req.params.folder)
       if (!folder) return res.status(404).send('Folder not found')
@@ -368,7 +369,7 @@ class Server {
 
     var purged = 0
     await Promise.all(foldersInBooksMetadata.map(async foldername => {
-      var hasMatchingAudiobook = this.audiobooks.find(ab => ab.id === foldername)
+      var hasMatchingAudiobook = this.db.audiobooks.find(ab => ab.id === foldername)
       if (!hasMatchingAudiobook) {
         var folderPath = Path.join(booksMetadata, foldername)
         Logger.debug(`[Server] Purging unused metadata ${folderPath}`)
@@ -633,7 +634,7 @@ class Server {
     await this.db.updateEntity('user', user)
 
     const initialPayload = {
-      serverSettings: this.serverSettings.toJSON(),
+      serverSettings: this.db.serverSettings.toJSON(),
       audiobookPath: global.AudiobookPath,
       metadataPath: global.MetadataPath,
       configPath: global.ConfigPath,
diff --git a/server/controllers/BookController.js b/server/controllers/BookController.js
index 0b05df04..eaa1c512 100644
--- a/server/controllers/BookController.js
+++ b/server/controllers/BookController.js
@@ -65,11 +65,11 @@ class BookController {
   // DELETE: api/books/all
   async deleteAll(req, res) {
     if (!req.user.isRoot) {
-      Logger.warn('User other than root attempted to delete all audiobooks', req.user)
+      Logger.warn('User other than root attempted to delete all library items', req.user)
       return res.sendStatus(403)
     }
-    Logger.info('Removing all Audiobooks')
-    var success = await this.db.recreateAudiobookDb()
+    Logger.info('Removing all Library Items')
+    var success = await this.db.recreateLibraryItemsDb()
     if (success) res.sendStatus(200)
     else res.sendStatus(500)
   }
diff --git a/server/objects/AudioFile.js b/server/objects/AudioFile.js
new file mode 100644
index 00000000..629a25af
--- /dev/null
+++ b/server/objects/AudioFile.js
@@ -0,0 +1,243 @@
+const { isNullOrNaN } = require('../utils/index')
+const AudioFileMetadata = require('./metadata/AudioMetaTags')
+
+class AudioFile {
+  constructor(data) {
+    this.index = null
+    this.ino = null
+    this.filename = null
+    this.ext = null
+    this.path = null
+    this.fullPath = null
+    this.mtimeMs = null
+    this.ctimeMs = null
+    this.birthtimeMs = null
+    this.addedAt = null
+
+    this.trackNumFromMeta = null
+    this.discNumFromMeta = null
+    this.trackNumFromFilename = null
+    this.discNumFromFilename = null
+
+    this.format = null
+    this.duration = null
+    this.size = null
+    this.bitRate = null
+    this.language = null
+    this.codec = null
+    this.timeBase = null
+    this.channels = null
+    this.channelLayout = null
+    this.chapters = []
+    this.embeddedCoverArt = null
+
+    // Tags scraped from the audio file
+    this.metadata = null
+
+    this.manuallyVerified = false
+    this.invalid = false
+    this.exclude = false
+    this.error = null
+
+    if (data) {
+      this.construct(data)
+    }
+  }
+
+  toJSON() {
+    return {
+      index: this.index,
+      ino: this.ino,
+      filename: this.filename,
+      ext: this.ext,
+      path: this.path,
+      fullPath: this.fullPath,
+      mtimeMs: this.mtimeMs,
+      ctimeMs: this.ctimeMs,
+      birthtimeMs: this.birthtimeMs,
+      addedAt: this.addedAt,
+      trackNumFromMeta: this.trackNumFromMeta,
+      discNumFromMeta: this.discNumFromMeta,
+      trackNumFromFilename: this.trackNumFromFilename,
+      discNumFromFilename: this.discNumFromFilename,
+      manuallyVerified: !!this.manuallyVerified,
+      invalid: !!this.invalid,
+      exclude: !!this.exclude,
+      error: this.error || null,
+      format: this.format,
+      duration: this.duration,
+      size: this.size,
+      bitRate: this.bitRate,
+      language: this.language,
+      codec: this.codec,
+      timeBase: this.timeBase,
+      channels: this.channels,
+      channelLayout: this.channelLayout,
+      chapters: this.chapters,
+      embeddedCoverArt: this.embeddedCoverArt,
+      metadata: this.metadata ? this.metadata.toJSON() : {}
+    }
+  }
+
+  construct(data) {
+    this.index = data.index
+    this.ino = data.ino
+    this.filename = data.filename
+    this.ext = data.ext
+    this.path = data.path
+    this.fullPath = data.fullPath
+    this.mtimeMs = data.mtimeMs || 0
+    this.ctimeMs = data.ctimeMs || 0
+    this.birthtimeMs = data.birthtimeMs || 0
+    this.addedAt = data.addedAt
+    this.manuallyVerified = !!data.manuallyVerified
+    this.invalid = !!data.invalid
+    this.exclude = !!data.exclude
+    this.error = data.error || null
+
+    this.trackNumFromMeta = data.trackNumFromMeta
+    this.discNumFromMeta = data.discNumFromMeta
+    this.trackNumFromFilename = data.trackNumFromFilename
+
+    if (data.cdNumFromFilename !== undefined) this.discNumFromFilename = data.cdNumFromFilename // TEMP:Support old var name
+    else this.discNumFromFilename = data.discNumFromFilename
+
+    this.format = data.format
+    this.duration = data.duration
+    this.size = data.size
+    this.bitRate = data.bitRate
+    this.language = data.language
+    this.codec = data.codec || null
+    this.timeBase = data.timeBase
+    this.channels = data.channels
+    this.channelLayout = data.channelLayout
+    this.chapters = data.chapters
+    this.embeddedCoverArt = data.embeddedCoverArt || null
+
+    // Old version of AudioFile used `tagAlbum` etc.
+    var isOldVersion = Object.keys(data).find(key => key.startsWith('tag'))
+    if (isOldVersion) {
+      this.metadata = new AudioFileMetadata(data)
+    } else {
+      this.metadata = new AudioFileMetadata(data.metadata || {})
+    }
+  }
+
+  // New scanner creates AudioFile from AudioFileScanner
+  setDataFromProbe(fileData, probeData) {
+    this.index = fileData.index || null
+    this.ino = fileData.ino || null
+    this.filename = fileData.filename
+    this.ext = fileData.ext
+    this.path = fileData.path
+    this.fullPath = fileData.fullPath
+    this.mtimeMs = fileData.mtimeMs || 0
+    this.ctimeMs = fileData.ctimeMs || 0
+    this.birthtimeMs = fileData.birthtimeMs || 0
+    this.addedAt = Date.now()
+
+    this.trackNumFromMeta = fileData.trackNumFromMeta
+    this.discNumFromMeta = fileData.discNumFromMeta
+    this.trackNumFromFilename = fileData.trackNumFromFilename
+    this.discNumFromFilename = fileData.discNumFromFilename
+
+    this.format = probeData.format
+    this.duration = probeData.duration
+    this.size = probeData.size
+    this.bitRate = probeData.bitRate || null
+    this.language = probeData.language
+    this.codec = probeData.codec || null
+    this.timeBase = probeData.timeBase
+    this.channels = probeData.channels
+    this.channelLayout = probeData.channelLayout
+    this.chapters = probeData.chapters || []
+    this.metadata = probeData.audioFileMetadata
+    this.embeddedCoverArt = probeData.embeddedCoverArt
+  }
+
+  validateTrackIndex() {
+    var numFromMeta = isNullOrNaN(this.trackNumFromMeta) ? null : Number(this.trackNumFromMeta)
+    var numFromFilename = isNullOrNaN(this.trackNumFromFilename) ? null : Number(this.trackNumFromFilename)
+
+    if (numFromMeta !== null) return numFromMeta
+    if (numFromFilename !== null) return numFromFilename
+
+    this.invalid = true
+    this.error = 'Failed to get track number'
+    return null
+  }
+
+  setDuplicateTrackNumber(num) {
+    this.invalid = true
+    this.error = 'Duplicate track number "' + num + '"'
+  }
+
+  syncChapters(updatedChapters) {
+    if (this.chapters.length !== updatedChapters.length) {
+      this.chapters = updatedChapters.map(ch => ({ ...ch }))
+      return true
+    } else if (updatedChapters.length === 0) {
+      if (this.chapters.length > 0) {
+        this.chapters = []
+        return true
+      }
+      return false
+    }
+
+    var hasUpdates = false
+    for (let i = 0; i < updatedChapters.length; i++) {
+      if (JSON.stringify(updatedChapters[i]) !== JSON.stringify(this.chapters[i])) {
+        hasUpdates = true
+      }
+    }
+    if (hasUpdates) {
+      this.chapters = updatedChapters.map(ch => ({ ...ch }))
+    }
+    return hasUpdates
+  }
+
+  clone() {
+    return new AudioFile(this.toJSON())
+  }
+
+  // If the file or parent directory was renamed it is synced here
+  syncFile(newFile) {
+    var hasUpdates = false
+    var keysToSync = ['path', 'fullPath', 'ext', 'filename']
+    keysToSync.forEach((key) => {
+      if (newFile[key] !== undefined && newFile[key] !== this[key]) {
+        hasUpdates = true
+        this[key] = newFile[key]
+      }
+    })
+    return hasUpdates
+  }
+
+  updateFromScan(scannedAudioFile) {
+    var hasUpdated = false
+
+    var newjson = scannedAudioFile.toJSON()
+    if (this.manuallyVerified) newjson.manuallyVerified = true
+    if (this.exclude) newjson.exclude = true
+    newjson.addedAt = this.addedAt
+
+    for (const key in newjson) {
+      if (key === 'metadata') {
+        if (!this.metadata || !this.metadata.isEqual(scannedAudioFile.metadata)) {
+          this.metadata = scannedAudioFile.metadata
+          hasUpdated = true
+        }
+      } else if (key === 'chapters') {
+        if (this.syncChapters(newjson.chapters || [])) {
+          hasUpdated = true
+        }
+      } else if (this[key] !== newjson[key]) {
+        // console.log(this.filename, 'key', key, 'updated', this[key], newjson[key])
+        this[key] = newjson[key]
+        hasUpdated = true
+      }
+    }
+    return hasUpdated
+  }
+}
+module.exports = AudioFile
\ No newline at end of file
diff --git a/server/objects/metadata/AudioFileMetadata.js b/server/objects/AudioFileMetadata.js
similarity index 100%
rename from server/objects/metadata/AudioFileMetadata.js
rename to server/objects/AudioFileMetadata.js
diff --git a/server/objects/Audiobook.js b/server/objects/Audiobook.js
index 799eaa2a..1cbe8cda 100644
--- a/server/objects/Audiobook.js
+++ b/server/objects/Audiobook.js
@@ -9,7 +9,7 @@ const abmetadataGenerator = require('../utils/abmetadataGenerator')
 const Logger = require('../Logger')
 const Book = require('./Book')
 const AudioTrack = require('./AudioTrack')
-const AudioFile = require('./files/AudioFile')
+const AudioFile = require('./AudioFile')
 const AudiobookFile = require('./AudiobookFile')
 
 class Audiobook {
diff --git a/server/objects/entities/Author.js b/server/objects/entities/Author.js
index 95ca9403..06d44e6e 100644
--- a/server/objects/entities/Author.js
+++ b/server/objects/entities/Author.js
@@ -1,10 +1,12 @@
+const { getId } = require('../../utils/index')
+
 class Author {
   constructor(author) {
     this.id = null
     this.asin = null
     this.name = null
     this.imagePath = null
-    this.imageFullPath = null
+    this.relImagePath = null
     this.addedAt = null
     this.updatedAt = null
 
@@ -18,7 +20,7 @@ class Author {
     this.asin = author.asin
     this.name = author.name
     this.imagePath = author.imagePath
-    this.imageFullPath = author.imageFullPath
+    this.relImagePath = author.relImagePath
     this.addedAt = author.addedAt
     this.updatedAt = author.updatedAt
   }
@@ -29,9 +31,9 @@ class Author {
       asin: this.asin,
       name: this.name,
       imagePath: this.imagePath,
-      imageFullPath: this.imageFullPath,
+      relImagePath: this.relImagePath,
       addedAt: this.addedAt,
-      updatedAt: this.updatedAt
+      lastUpdate: this.updatedAt
     }
   }
 
@@ -41,5 +43,15 @@ class Author {
       name: this.name
     }
   }
+
+  setData(data) {
+    this.id = getId('aut')
+    this.name = data.name
+    this.asin = data.asin || null
+    this.imagePath = data.imagePath || null
+    this.relImagePath = data.relImagePath || null
+    this.addedAt = Date.now()
+    this.updatedAt = Date.now()
+  }
 }
 module.exports = Author
\ No newline at end of file
diff --git a/server/objects/entities/Book.js b/server/objects/entities/Book.js
index 4779b651..37c497e1 100644
--- a/server/objects/entities/Book.js
+++ b/server/objects/entities/Book.js
@@ -1,39 +1,41 @@
 const BookMetadata = require('../metadata/BookMetadata')
 const AudioFile = require('../files/AudioFile')
 const EBookFile = require('../files/EBookFile')
-const AudioTrack = require('../AudioTrack')
 
 class Book {
   constructor(book) {
     this.metadata = null
 
+    this.coverPath = null
+    this.relCoverPath = null
     this.tags = []
     this.audioFiles = []
     this.ebookFiles = []
-    this.audioTracks = []
     this.chapters = []
 
-    if (books) {
+    if (book) {
       this.construct(book)
     }
   }
 
   construct(book) {
     this.metadata = new BookMetadata(book.metadata)
+    this.coverPath = book.coverPath
+    this.relCoverPath = book.relCoverPath
     this.tags = [...book.tags]
     this.audioFiles = book.audioFiles.map(f => new AudioFile(f))
     this.ebookFiles = book.ebookFiles.map(f => new EBookFile(f))
-    this.audioTracks = book.audioTracks.map(a => new AudioTrack(a))
     this.chapters = book.chapters.map(c => ({ ...c }))
   }
 
   toJSON() {
     return {
       metadata: this.metadata.toJSON(),
+      coverPath: this.coverPath,
+      relCoverPath: this.relCoverPath,
       tags: [...this.tags],
       audioFiles: this.audioFiles.map(f => f.toJSON()),
       ebookFiles: this.ebookFiles.map(f => f.toJSON()),
-      audioTracks: this.audioTracks.map(a => a.toJSON()),
       chapters: this.chapters.map(c => ({ ...c }))
     }
   }
diff --git a/server/objects/entities/Series.js b/server/objects/entities/Series.js
index b6941c1e..49db731b 100644
--- a/server/objects/entities/Series.js
+++ b/server/objects/entities/Series.js
@@ -1,8 +1,9 @@
+const { getId } = require('../../utils/index')
+
 class Series {
   constructor(series) {
     this.id = null
     this.name = null
-    this.sequence = null
     this.addedAt = null
     this.updatedAt = null
 
@@ -14,7 +15,6 @@ class Series {
   construct(series) {
     this.id = series.id
     this.name = series.name
-    this.sequence = series.sequence
     this.addedAt = series.addedAt
     this.updatedAt = series.updatedAt
   }
@@ -23,18 +23,24 @@ class Series {
     return {
       id: this.id,
       name: this.name,
-      sequence: this.sequence,
       addedAt: this.addedAt,
       updatedAt: this.updatedAt
     }
   }
 
-  toJSONMinimal() {
+  toJSONMinimal(sequence) {
     return {
       id: this.id,
       name: this.name,
-      sequence: this.sequence
+      sequence
     }
   }
+
+  setData(data) {
+    this.id = getId('ser')
+    this.name = data.name
+    this.addedAt = Date.now()
+    this.updatedAt = Date.now()
+  }
 }
 module.exports = Series
\ No newline at end of file
diff --git a/server/objects/files/AudioFile.js b/server/objects/files/AudioFile.js
index aa3425ee..83327169 100644
--- a/server/objects/files/AudioFile.js
+++ b/server/objects/files/AudioFile.js
@@ -1,20 +1,14 @@
 const { isNullOrNaN } = require('../../utils/index')
-
-const Logger = require('../../Logger')
-const AudioFileMetadata = require('../metadata/AudioFileMetadata')
+const AudioMetaTags = require('../metadata/AudioMetaTags')
+const FileMetadata = require('../metadata/FileMetadata')
 
 class AudioFile {
   constructor(data) {
     this.index = null
     this.ino = null
-    this.filename = null
-    this.ext = null
-    this.path = null
-    this.fullPath = null
-    this.mtimeMs = null
-    this.ctimeMs = null
-    this.birthtimeMs = null
+    this.metadata = null
     this.addedAt = null
+    this.updatedAt = null
 
     this.trackNumFromMeta = null
     this.discNumFromMeta = null
@@ -23,7 +17,6 @@ class AudioFile {
 
     this.format = null
     this.duration = null
-    this.size = null
     this.bitRate = null
     this.language = null
     this.codec = null
@@ -34,7 +27,7 @@ class AudioFile {
     this.embeddedCoverArt = null
 
     // Tags scraped from the audio file
-    this.metadata = null
+    this.metaTags = null
 
     this.manuallyVerified = false
     this.invalid = false
@@ -50,14 +43,9 @@ class AudioFile {
     return {
       index: this.index,
       ino: this.ino,
-      filename: this.filename,
-      ext: this.ext,
-      path: this.path,
-      fullPath: this.fullPath,
-      mtimeMs: this.mtimeMs,
-      ctimeMs: this.ctimeMs,
-      birthtimeMs: this.birthtimeMs,
+      metadata: this.metadata.toJSON(),
       addedAt: this.addedAt,
+      updatedAt: this.updatedAt,
       trackNumFromMeta: this.trackNumFromMeta,
       discNumFromMeta: this.discNumFromMeta,
       trackNumFromFilename: this.trackNumFromFilename,
@@ -68,7 +56,6 @@ class AudioFile {
       error: this.error || null,
       format: this.format,
       duration: this.duration,
-      size: this.size,
       bitRate: this.bitRate,
       language: this.language,
       codec: this.codec,
@@ -77,21 +64,16 @@ class AudioFile {
       channelLayout: this.channelLayout,
       chapters: this.chapters,
       embeddedCoverArt: this.embeddedCoverArt,
-      metadata: this.metadata ? this.metadata.toJSON() : {}
+      metaTags: this.metaTags ? this.metaTags.toJSON() : {}
     }
   }
 
   construct(data) {
     this.index = data.index
     this.ino = data.ino
-    this.filename = data.filename
-    this.ext = data.ext
-    this.path = data.path
-    this.fullPath = data.fullPath
-    this.mtimeMs = data.mtimeMs || 0
-    this.ctimeMs = data.ctimeMs || 0
-    this.birthtimeMs = data.birthtimeMs || 0
+    this.metadata = new FileMetadata(data.metadata || {})
     this.addedAt = data.addedAt
+    this.updatedAt = data.updatedAt
     this.manuallyVerified = !!data.manuallyVerified
     this.invalid = !!data.invalid
     this.exclude = !!data.exclude
@@ -106,7 +88,6 @@ class AudioFile {
 
     this.format = data.format
     this.duration = data.duration
-    this.size = data.size
     this.bitRate = data.bitRate
     this.language = data.language
     this.codec = data.codec || null
@@ -116,27 +97,17 @@ class AudioFile {
     this.chapters = data.chapters
     this.embeddedCoverArt = data.embeddedCoverArt || null
 
-    // Old version of AudioFile used `tagAlbum` etc.
-    var isOldVersion = Object.keys(data).find(key => key.startsWith('tag'))
-    if (isOldVersion) {
-      this.metadata = new AudioFileMetadata(data)
-    } else {
-      this.metadata = new AudioFileMetadata(data.metadata || {})
-    }
+    this.metaTags = new AudioMetaTags(data.metaTags || {})
   }
 
   // New scanner creates AudioFile from AudioFileScanner
   setDataFromProbe(fileData, probeData) {
     this.index = fileData.index || null
     this.ino = fileData.ino || null
-    this.filename = fileData.filename
-    this.ext = fileData.ext
-    this.path = fileData.path
-    this.fullPath = fileData.fullPath
-    this.mtimeMs = fileData.mtimeMs || 0
-    this.ctimeMs = fileData.ctimeMs || 0
-    this.birthtimeMs = fileData.birthtimeMs || 0
+
+    // TODO: Update file metadata for set data from probe
     this.addedAt = Date.now()
+    this.updatedAt = Date.now()
 
     this.trackNumFromMeta = fileData.trackNumFromMeta
     this.discNumFromMeta = fileData.discNumFromMeta
@@ -145,7 +116,6 @@ class AudioFile {
 
     this.format = probeData.format
     this.duration = probeData.duration
-    this.size = probeData.size
     this.bitRate = probeData.bitRate || null
     this.language = probeData.language
     this.codec = probeData.codec || null
@@ -153,7 +123,7 @@ class AudioFile {
     this.channels = probeData.channels
     this.channelLayout = probeData.channelLayout
     this.chapters = probeData.chapters || []
-    this.metadata = probeData.audioFileMetadata
+    this.metaTags = probeData.audioFileMetadata
     this.embeddedCoverArt = probeData.embeddedCoverArt
   }
 
@@ -204,15 +174,17 @@ class AudioFile {
 
   // If the file or parent directory was renamed it is synced here
   syncFile(newFile) {
-    var hasUpdates = false
-    var keysToSync = ['path', 'fullPath', 'ext', 'filename']
-    keysToSync.forEach((key) => {
-      if (newFile[key] !== undefined && newFile[key] !== this[key]) {
-        hasUpdates = true
-        this[key] = newFile[key]
-      }
-    })
-    return hasUpdates
+    // TODO: Sync file would update the file info if needed
+    return false
+    // var hasUpdates = false
+    // var keysToSync = ['path', 'relPath', 'ext', 'filename']
+    // keysToSync.forEach((key) => {
+    //   if (newFile[key] !== undefined && newFile[key] !== this[key]) {
+    //     hasUpdates = true
+    //     this[key] = newFile[key]
+    //   }
+    // })
+    // return hasUpdates
   }
 
   updateFromScan(scannedAudioFile) {
@@ -224,9 +196,9 @@ class AudioFile {
     newjson.addedAt = this.addedAt
 
     for (const key in newjson) {
-      if (key === 'metadata') {
-        if (!this.metadata || !this.metadata.isEqual(scannedAudioFile.metadata)) {
-          this.metadata = scannedAudioFile.metadata
+      if (key === 'metaTags') {
+        if (!this.metaTags || !this.metaTags.isEqual(scannedAudioFile.metadata)) {
+          this.metaTags = scannedAudioFile.metadata
           hasUpdated = true
         }
       } else if (key === 'chapters') {
diff --git a/server/objects/files/EBookFile.js b/server/objects/files/EBookFile.js
index a964e72b..d5e81f01 100644
--- a/server/objects/files/EBookFile.js
+++ b/server/objects/files/EBookFile.js
@@ -6,7 +6,7 @@ class EBookFile {
     this.metadata = null
     this.ebookFormat = null
     this.addedAt = null
-    this.lastUpdate = null
+    this.updatedAt = null
 
     if (file) {
       this.construct(file)
@@ -18,7 +18,7 @@ class EBookFile {
     this.metadata = new FileMetadata(file)
     this.ebookFormat = file.ebookFormat
     this.addedAt = file.addedAt
-    this.lastUpdate = file.lastUpdate
+    this.updatedAt = file.updatedAt
   }
 
   toJSON() {
@@ -27,7 +27,7 @@ class EBookFile {
       metadata: this.metadata.toJSON(),
       ebookFormat: this.ebookFormat,
       addedAt: this.addedAt,
-      lastUpdate: this.lastUpdate
+      updatedAt: this.updatedAt
     }
   }
 }
diff --git a/server/objects/metadata/AudioMetaTags.js b/server/objects/metadata/AudioMetaTags.js
new file mode 100644
index 00000000..4b1d3891
--- /dev/null
+++ b/server/objects/metadata/AudioMetaTags.js
@@ -0,0 +1,129 @@
+class AudioMetaTags {
+  constructor(metadata) {
+    this.tagAlbum = null
+    this.tagArtist = null
+    this.tagGenre = null
+    this.tagTitle = null
+    this.tagSeries = null
+    this.tagSeriesPart = null
+    this.tagTrack = null
+    this.tagDisc = null
+    this.tagSubtitle = null
+    this.tagAlbumArtist = null
+    this.tagDate = null
+    this.tagComposer = null
+    this.tagPublisher = null
+    this.tagComment = null
+    this.tagDescription = null
+    this.tagEncoder = null
+    this.tagEncodedBy = null
+    this.tagIsbn = null
+    this.tagLanguage = null
+    this.tagASIN = null
+
+    if (metadata) {
+      this.construct(metadata)
+    }
+  }
+
+  toJSON() {
+    // Only return the tags that are actually set
+    var json = {}
+    for (const key in this) {
+      if (key.startsWith('tag') && this[key]) {
+        json[key] = this[key]
+      }
+    }
+    return json
+  }
+
+  construct(metadata) {
+    this.tagAlbum = metadata.tagAlbum || null
+    this.tagArtist = metadata.tagArtist || null
+    this.tagGenre = metadata.tagGenre || null
+    this.tagTitle = metadata.tagTitle || null
+    this.tagSeries = metadata.tagSeries || null
+    this.tagSeriesPart = metadata.tagSeriesPart || null
+    this.tagTrack = metadata.tagTrack || null
+    this.tagDisc = metadata.tagDisc || null
+    this.tagSubtitle = metadata.tagSubtitle || null
+    this.tagAlbumArtist = metadata.tagAlbumArtist || null
+    this.tagDate = metadata.tagDate || null
+    this.tagComposer = metadata.tagComposer || null
+    this.tagPublisher = metadata.tagPublisher || null
+    this.tagComment = metadata.tagComment || null
+    this.tagDescription = metadata.tagDescription || null
+    this.tagEncoder = metadata.tagEncoder || null
+    this.tagEncodedBy = metadata.tagEncodedBy || null
+    this.tagIsbn = metadata.tagIsbn || null
+    this.tagLanguage = metadata.tagLanguage || null
+    this.tagASIN = metadata.tagASIN || null
+  }
+
+  // Data parsed in prober.js
+  setData(payload) {
+    this.tagAlbum = payload.file_tag_album || null
+    this.tagArtist = payload.file_tag_artist || null
+    this.tagGenre = payload.file_tag_genre || null
+    this.tagTitle = payload.file_tag_title || null
+    this.tagSeries = payload.file_tag_series || null
+    this.tagSeriesPart = payload.file_tag_seriespart || null
+    this.tagTrack = payload.file_tag_track || null
+    this.tagDisc = payload.file_tag_disc || null
+    this.tagSubtitle = payload.file_tag_subtitle || null
+    this.tagAlbumArtist = payload.file_tag_albumartist || null
+    this.tagDate = payload.file_tag_date || null
+    this.tagComposer = payload.file_tag_composer || null
+    this.tagPublisher = payload.file_tag_publisher || null
+    this.tagComment = payload.file_tag_comment || null
+    this.tagDescription = payload.file_tag_description || null
+    this.tagEncoder = payload.file_tag_encoder || null
+    this.tagEncodedBy = payload.file_tag_encodedby || null
+    this.tagIsbn = payload.file_tag_isbn || null
+    this.tagLanguage = payload.file_tag_language || null
+    this.tagASIN = payload.file_tag_asin || null
+  }
+
+  updateData(payload) {
+    const dataMap = {
+      tagAlbum: payload.file_tag_album || null,
+      tagArtist: payload.file_tag_artist || null,
+      tagGenre: payload.file_tag_genre || null,
+      tagTitle: payload.file_tag_title || null,
+      tagSeries: payload.file_tag_series || null,
+      tagSeriesPart: payload.file_tag_seriespart || null,
+      tagTrack: payload.file_tag_track || null,
+      tagDisc: payload.file_tag_disc || null,
+      tagSubtitle: payload.file_tag_subtitle || null,
+      tagAlbumArtist: payload.file_tag_albumartist || null,
+      tagDate: payload.file_tag_date || null,
+      tagComposer: payload.file_tag_composer || null,
+      tagPublisher: payload.file_tag_publisher || null,
+      tagComment: payload.file_tag_comment || null,
+      tagDescription: payload.file_tag_description || null,
+      tagEncoder: payload.file_tag_encoder || null,
+      tagEncodedBy: payload.file_tag_encodedby || null,
+      tagIsbn: payload.file_tag_isbn || null,
+      tagLanguage: payload.file_tag_language || null,
+      tagASIN: payload.file_tag_asin || null
+    }
+
+    var hasUpdates = false
+    for (const key in dataMap) {
+      if (dataMap[key] !== this[key]) {
+        this[key] = dataMap[key]
+        hasUpdates = true
+      }
+    }
+    return hasUpdates
+  }
+
+  isEqual(audioFileMetadata) {
+    if (!audioFileMetadata || !audioFileMetadata.toJSON) return false
+    for (const key in audioFileMetadata.toJSON()) {
+      if (audioFileMetadata[key] !== this[key]) return false
+    }
+    return true
+  }
+}
+module.exports = AudioMetaTags
\ No newline at end of file
diff --git a/server/objects/metadata/BookMetadata.js b/server/objects/metadata/BookMetadata.js
index 1d32c82a..171e77ef 100644
--- a/server/objects/metadata/BookMetadata.js
+++ b/server/objects/metadata/BookMetadata.js
@@ -22,12 +22,12 @@ class BookMetadata {
   construct(metadata) {
     this.title = metadata.title
     this.subtitle = metadata.subtitle
-    this.authors = metadata.authors.map(a => ({ ...a }))
-    this.narrators = [...metadata.narrators]
-    this.series = metadata.series.map(s => ({ ...s }))
-    this.genres = [...metadata.genres]
-    this.publishedYear = metadata.publishedYear
-    this.publishedDate = metadata.publishedDate
+    this.authors = (metadata.authors && metadata.authors.map) ? metadata.authors.map(a => ({ ...a })) : []
+    this.narrators = metadata.narrators ? [...metadata.narrators] : []
+    this.series = (metadata.series && metadata.series.map) ? metadata.series.map(s => ({ ...s })) : []
+    this.genres = metadata.genres ? [...metadata.genres] : []
+    this.publishedYear = metadata.publishedYear || null
+    this.publishedDate = metadata.publishedDate || null
     this.publisher = metadata.publisher
     this.description = metadata.description
     this.isbn = metadata.isbn
diff --git a/server/objects/metadata/FileMetadata.js b/server/objects/metadata/FileMetadata.js
index f7bb8eb2..1cd55eb3 100644
--- a/server/objects/metadata/FileMetadata.js
+++ b/server/objects/metadata/FileMetadata.js
@@ -37,5 +37,9 @@ class FileMetadata {
       birthtimeMs: this.birthtimeMs
     }
   }
+
+  clone() {
+    return new FileMetadata(this.toJSON())
+  }
 }
 module.exports = FileMetadata
\ No newline at end of file
diff --git a/server/scanner/AudioProbeData.js b/server/scanner/AudioProbeData.js
index 90c45e27..05e09891 100644
--- a/server/scanner/AudioProbeData.js
+++ b/server/scanner/AudioProbeData.js
@@ -1,4 +1,4 @@
-const AudioFileMetadata = require('../objects/metadata/AudioFileMetadata')
+const AudioFileMetadata = require('../objects/AudioFileMetadata')
 
 class AudioProbeData {
   constructor() {
diff --git a/server/utils/dbMigration.js b/server/utils/dbMigration.js
new file mode 100644
index 00000000..72a39108
--- /dev/null
+++ b/server/utils/dbMigration.js
@@ -0,0 +1,210 @@
+const Path = require('path')
+const fs = require('fs-extra')
+const njodb = require("njodb")
+
+const { SupportedEbookTypes } = require('./globals')
+const Audiobook = require('../objects/Audiobook')
+const LibraryItem = require('../objects/LibraryItem')
+
+const Logger = require('../Logger')
+const Book = require('../objects/entities/Book')
+const BookMetadata = require('../objects/metadata/BookMetadata')
+const Author = require('../objects/entities/Author')
+const Series = require('../objects/entities/Series')
+const AudioFile = require('../objects/files/AudioFile')
+const EBookFile = require('../objects/files/EBookFile')
+const LibraryFile = require('../objects/files/LibraryFile')
+const FileMetadata = require('../objects/metadata/FileMetadata')
+const AudioMetaTags = require('../objects/metadata/AudioMetaTags')
+
+var authorsToAdd = []
+var seriesToAdd = []
+
+// Load old audiobooks
+async function loadAudiobooks() {
+  var audiobookPath = Path.join(global.ConfigPath, 'audiobooks')
+
+  var pathExists = await fs.pathExists(audiobookPath)
+  if (!pathExists) {
+    return []
+  }
+
+  var audiobooksDb = new njodb.Database(audiobookPath)
+  return audiobooksDb.select(() => true).then((results) => {
+    return results.data.map(a => new Audiobook(a))
+  })
+}
+
+function makeAuthorsFromOldAb(authorsList) {
+  return authorsList.filter(a => !!a).map(authorName => {
+    var existingAuthor = authorsToAdd.find(a => a.name.toLowerCase() === authorName.toLowerCase())
+    if (existingAuthor) {
+      return existingAuthor.toJSONMinimal()
+    }
+
+    var newAuthor = new Author()
+    newAuthor.setData({ name: authorName })
+    authorsToAdd.push(newAuthor)
+    Logger.info(`>>> Created new author named "${authorName}"`)
+    return newAuthor.toJSONMinimal()
+  })
+}
+
+function makeSeriesFromOldAb({ series, volumeNumber }) {
+  var existingSeries = seriesToAdd.find(s => s.name.toLowerCase() === series.toLowerCase())
+  if (existingSeries) {
+    return [existingSeries.toJSONMinimal(volumeNumber)]
+  }
+  var newSeries = new Series()
+  newSeries.setData({ name: series })
+  seriesToAdd.push(newSeries)
+  Logger.info(`>>> Created new series named "${series}"`)
+  return [newSeries.toJSONMinimal(volumeNumber)]
+}
+
+function getRelativePath(srcPath, basePath) {
+  srcPath = srcPath.replace(/\\/g, '/')
+  basePath = basePath.replace(/\\/g, '/')
+  if (basePath.endsWith('/')) basePath = basePath.slice(0, -1)
+  return srcPath.replace(basePath, '')
+}
+
+function makeFilesFromOldAb(audiobook) {
+  var libraryFiles = []
+  var ebookFiles = []
+
+  var audioFiles = audiobook._audioFiles.map((af) => {
+    var fileMetadata = new FileMetadata(af)
+    fileMetadata.path = af.fullPath
+    fileMetadata.relPath = getRelativePath(af.fullPath, audiobook.fullPath)
+
+    var newLibraryFile = new LibraryFile()
+    newLibraryFile.ino = af.ino
+    newLibraryFile.metadata = fileMetadata.clone()
+    newLibraryFile.addedAt = af.addedAt
+    newLibraryFile.updatedAt = Date.now()
+    libraryFiles.push(newLibraryFile)
+
+    var audioMetaTags = new AudioMetaTags(af.metadata || {}) // Old metaTags was named metadata
+    delete af.metadata
+
+    var newAudioFile = new AudioFile(af)
+    newAudioFile.metadata = fileMetadata
+    newAudioFile.metaTags = audioMetaTags
+    newAudioFile.updatedAt = Date.now()
+    return newAudioFile
+  })
+
+  audiobook._otherFiles.forEach((file) => {
+    var fileMetadata = new FileMetadata(file)
+    fileMetadata.path = file.fullPath
+    fileMetadata.relPath = getRelativePath(file.fullPath, audiobook.fullPath)
+
+    var newLibraryFile = new LibraryFile()
+    newLibraryFile.ino = file.ino
+    newLibraryFile.metadata = fileMetadata.clone()
+    newLibraryFile.addedAt = file.addedAt
+    newLibraryFile.updatedAt = Date.now()
+    libraryFiles.push(newLibraryFile)
+
+    var formatExt = (file.ext || '').slice(1)
+    if (SupportedEbookTypes.includes(formatExt)) {
+      var newEBookFile = new EBookFile()
+      newEBookFile.ino = file.ino
+      newEBookFile.metadata = fileMetadata
+      newEBookFile.ebookFormat = formatExt
+      newEBookFile.addedAt = file.addedAt
+      newEBookFile.updatedAt = Date.now()
+      ebookFiles.push(newEBookFile)
+    }
+  })
+
+  return {
+    libraryFiles,
+    ebookFiles,
+    audioFiles
+  }
+}
+
+function makeLibraryItemFromOldAb(audiobook) {
+  var libraryItem = new LibraryItem()
+  libraryItem.id = audiobook.id
+  libraryItem.ino = audiobook.ino
+  libraryItem.libraryId = audiobook.libraryId
+  libraryItem.folderId = audiobook.folderId
+  libraryItem.path = audiobook.fullPath
+  libraryItem.relPath = audiobook.path
+  libraryItem.mtimeMs = audiobook.mtimeMs || 0
+  libraryItem.ctimeMs = audiobook.ctimeMs || 0
+  libraryItem.birthtimeMs = audiobook.birthtimeMs || 0
+  libraryItem.addedAt = audiobook.addedAt
+  libraryItem.lastUpdate = audiobook.lastUpdate
+  libraryItem.lastScan = audiobook.lastScan
+  libraryItem.scanVersion = audiobook.scanVersion
+  libraryItem.isMissing = audiobook.isMissing
+  libraryItem.entityType = 'book'
+
+  var bookEntity = new Book()
+  var bookMetadata = new BookMetadata(audiobook.book)
+  if (audiobook.book.narrator) {
+    bookMetadata.narrators = audiobook.book._narratorsList
+  }
+  // Returns array of json minimal authors
+  bookMetadata.authors = makeAuthorsFromOldAb(audiobook.book._authorsList)
+
+  // Returns array of json minimal series
+  if (audiobook.book.series) {
+    bookMetadata.series = makeSeriesFromOldAb(audiobook.book)
+  }
+
+  bookEntity.metadata = bookMetadata
+  bookEntity.coverPath = audiobook.book.coverFullPath
+  // Path relative to library item
+  bookEntity.relCoverPath = getRelativePath(audiobook.book.coverFullPath, audiobook.fullPath)
+  bookEntity.tags = [...audiobook.tags]
+
+  var payload = makeFilesFromOldAb(audiobook)
+  bookEntity.audioFiles = payload.audioFiles
+  bookEntity.ebookFiles = payload.ebookFiles
+
+  if (audiobook.chapters && audiobook.chapters.length) {
+    bookEntity.chapters = audiobook.chapters.map(c => ({ ...c }))
+  }
+
+  libraryItem.entity = bookEntity
+  libraryItem.libraryFiles = payload.libraryFiles
+  return libraryItem
+}
+
+async function migrateDb(db) {
+  Logger.info(`==== Starting DB Migration ====`)
+
+  var audiobooks = await loadAudiobooks()
+  if (!audiobooks.length) {
+    Logger.info(`>>> No audiobooks in db, no migration necessary`)
+    return
+  }
+
+  Logger.info(`>>> Loaded old audiobook data with ${audiobooks.length} records`)
+
+  if (db.libraryItems.length) {
+    Logger.info(`>>> Some library items already loaded ${db.libraryItems.length} items | ${db.series.length} series | ${db.authors.length} authors`)
+    return
+  }
+
+  var libraryItems = audiobooks.map((ab) => makeLibraryItemFromOldAb(ab))
+
+  Logger.info(`>>> ${libraryItems.length} Library Items made`)
+  await db.insertEntities('libraryItem', libraryItems)
+  if (authorsToAdd.length) {
+    Logger.info(`>>> ${authorsToAdd.length} Authors made`)
+    await db.insertEntities('author', authorsToAdd)
+  }
+  if (seriesToAdd.length) {
+    Logger.info(`>>> ${seriesToAdd.length} Series made`)
+    await db.insertEntities('series', seriesToAdd)
+  }
+
+  Logger.info(`==== DB Migration Complete ====`)
+}
+module.exports = migrateDb
\ No newline at end of file