diff --git a/client/components/app/StreamContainer.vue b/client/components/app/StreamContainer.vue
index 47a1abc7..e5890e11 100644
--- a/client/components/app/StreamContainer.vue
+++ b/client/components/app/StreamContainer.vue
@@ -255,6 +255,9 @@ export default {
       })
       this.playerHandler.prepareOpenSession(session)
     },
+    streamOpen(session) {
+      console.log(`[StreamContainer] Stream session open`, session)
+    },
     streamClosed(streamId) {
       // Stream was closed from the server
       if (this.playerHandler.isPlayingLocalItem && this.playerHandler.currentStreamId === streamId) {
diff --git a/client/players/CastPlayer.js b/client/players/CastPlayer.js
index 41326669..8937a108 100644
--- a/client/players/CastPlayer.js
+++ b/client/players/CastPlayer.js
@@ -18,7 +18,7 @@ export default class CastPlayer extends EventEmitter {
     this.defaultPlaybackRate = 1
 
     // TODO: Use canDisplayType on receiver to check mime types
-    this.playableMimeTypes = {}
+    this.playableMimeTypes = []
 
     this.coverUrl = ''
     this.castPlayerState = 'IDLE'
diff --git a/client/players/LocalPlayer.js b/client/players/LocalPlayer.js
index 7c9086c4..db0798c0 100644
--- a/client/players/LocalPlayer.js
+++ b/client/players/LocalPlayer.js
@@ -19,7 +19,7 @@ export default class LocalPlayer extends EventEmitter {
     this.playWhenReady = false
     this.defaultPlaybackRate = 1
 
-    this.playableMimeTypes = {}
+    this.playableMimeTypes = []
 
     this.initialize()
   }
@@ -46,11 +46,14 @@ export default class LocalPlayer extends EventEmitter {
     this.player.addEventListener('loadedmetadata', this.evtLoadedMetadata.bind(this))
     this.player.addEventListener('timeupdate', this.evtTimeupdate.bind(this))
 
-    var mimeTypes = ['audio/flac', 'audio/mpeg', 'audio/mp4', 'audio/ogg', 'audio/aac']
+    var mimeTypes = ['audio/flac', 'audio/mpeg', 'audio/mp4', 'audio/ogg', 'audio/aac', 'audio/x-ms-wma', 'audio/x-aiff']
+    var mimeTypeCanPlayMap = {}
     mimeTypes.forEach((mt) => {
-      this.playableMimeTypes[mt] = this.player.canPlayType(mt)
+      var canPlay = this.player.canPlayType(mt)
+      mimeTypeCanPlayMap[mt] = canPlay
+      if (canPlay) this.playableMimeTypes.push(mt)
     })
-    console.log(`[LocalPlayer] Supported mime types`, this.playableMimeTypes)
+    console.log(`[LocalPlayer] Supported mime types`, mimeTypeCanPlayMap, this.playableMimeTypes)
   }
 
   evtPlay() {
diff --git a/client/players/PlayerHandler.js b/client/players/PlayerHandler.js
index 78ded80a..26cb26bb 100644
--- a/client/players/PlayerHandler.js
+++ b/client/players/PlayerHandler.js
@@ -138,7 +138,7 @@ export default class PlayerHandler {
 
   async prepare(forceTranscode = false) {
     var payload = {
-      supportedMimeTypes: Object.keys(this.player.playableMimeTypes),
+      supportedMimeTypes: this.player.playableMimeTypes,
       mediaPlayer: this.isCasting ? 'chromecast' : 'html5',
       forceTranscode,
       forceDirectPlay: this.isCasting // TODO: add transcode support for chromecast
diff --git a/client/plugins/constants.js b/client/plugins/constants.js
index 4dd85ca5..e7081e99 100644
--- a/client/plugins/constants.js
+++ b/client/plugins/constants.js
@@ -1,6 +1,6 @@
 const SupportedFileTypes = {
   image: ['png', 'jpg', 'jpeg', 'webp'],
-  audio: ['m4b', 'mp3', 'm4a', 'flac', 'opus', 'mp4', 'aac'],
+  audio: ['m4b', 'mp3', 'm4a', 'flac', 'opus', 'ogg', 'mp4', 'aac', 'wma', 'aiff'],
   ebook: ['epub', 'pdf', 'mobi', 'azw3', 'cbr', 'cbz'],
   info: ['nfo'],
   text: ['txt'],
diff --git a/server/Server.js b/server/Server.js
index 6efdba34..5d4180ac 100644
--- a/server/Server.js
+++ b/server/Server.js
@@ -114,7 +114,7 @@ class Server {
     Logger.info('[Server] Init v' + version)
     // TODO: Remove orphan streams from playback session manager
     // await this.streamManager.ensureStreamsDir()
-    // await this.streamManager.removeOrphanStreams()
+    await this.playbackSessionManager.removeOrphanStreams()
     await this.downloadManager.removeOrphanDownloads()
 
     if (version.localeCompare('2.0.0') < 0) { // Old version data model migration
diff --git a/server/managers/PlaybackSessionManager.js b/server/managers/PlaybackSessionManager.js
index faa941ca..45f010fa 100644
--- a/server/managers/PlaybackSessionManager.js
+++ b/server/managers/PlaybackSessionManager.js
@@ -3,6 +3,7 @@ const { PlayMethod } = require('../utils/constants')
 const PlaybackSession = require('../objects/PlaybackSession')
 const Stream = require('../objects/Stream')
 const Logger = require('../Logger')
+const fs = require('fs-extra')
 
 class PlaybackSessionManager {
   constructor(db, emitter, clientEmitter) {
@@ -95,9 +96,12 @@ class PlaybackSessionManager {
       Logger.debug(`[PlaybackSessionManager] "${user.username}" starting stream session for item "${libraryItem.id}"`)
       var stream = new Stream(newPlaybackSession.id, this.StreamsPath, user, libraryItem, episodeId, userStartTime, this.clientEmitter.bind(this))
       await stream.generatePlaylist()
+      stream.start() // Start transcode
+
       audioTracks = [stream.getAudioTrack()]
       newPlaybackSession.stream = stream
       newPlaybackSession.playMethod = PlayMethod.TRANSCODE
+
       stream.on('closed', () => {
         Logger.debug(`[PlaybackSessionManager] Stream closed for session "${newPlaybackSession.id}"`)
         newPlaybackSession.stream = null
@@ -179,5 +183,26 @@ class PlaybackSessionManager {
     this.sessions = this.sessions.filter(s => s.id !== sessionId)
     Logger.debug(`[PlaybackSessionManager] Removed session "${sessionId}"`)
   }
+
+  // Check for streams that are not in memory and remove
+  async removeOrphanStreams() {
+    await fs.ensureDir(this.StreamsPath)
+    try {
+      var streamsInPath = await fs.readdir(this.StreamsPath)
+      for (let i = 0; i < streamsInPath.length; i++) {
+        var streamId = streamsInPath[i]
+        if (streamId.startsWith('play_')) { // Make sure to only remove folders that are a stream
+          var session = this.sessions.find(se => se.id === streamId)
+          if (!session) {
+            var streamPath = Path.join(this.StreamsPath, streamId)
+            Logger.debug(`[PlaybackSessionManager] Removing orphan stream "${streamPath}"`)
+            await fs.remove(streamPath)
+          }
+        }
+      }
+    } catch (error) {
+      Logger.error(`[PlaybackSessionManager] cleanOrphanStreams failed`, error)
+    }
+  }
 }
 module.exports = PlaybackSessionManager
\ No newline at end of file
diff --git a/server/objects/Stream.js b/server/objects/Stream.js
index abe61fde..f60c744a 100644
--- a/server/objects/Stream.js
+++ b/server/objects/Stream.js
@@ -3,8 +3,9 @@ const EventEmitter = require('events')
 const Path = require('path')
 const fs = require('fs-extra')
 const Logger = require('../Logger')
-const { getId, secondsToTimestamp } = require('../utils/index')
+const { secondsToTimestamp } = require('../utils/index')
 const { writeConcatFile } = require('../utils/ffmpegHelpers')
+const { AudioMimeType } = require('../utils/constants')
 const hlsPlaylistGenerator = require('../utils/hlsPlaylistGenerator')
 const AudioTrack = require('./files/AudioTrack')
 
@@ -63,6 +64,18 @@ class Stream extends EventEmitter {
     if (!this.tracks.length) return null
     return this.tracks[0].metadata.format
   }
+  get tracksMimeType() {
+    if (!this.tracks.length) return null
+    return this.tracks[0].mimeType
+  }
+  get mimeTypesToForceAAC() {
+    return [
+      AudioMimeType.FLAC,
+      AudioMimeType.OPUS,
+      AudioMimeType.WMA,
+      AudioMimeType.AIFF
+    ]
+  }
   get userToken() {
     return this.user.token
   }
@@ -89,11 +102,6 @@ class Stream extends EventEmitter {
   get clientPlaylistUri() {
     return `/hls/${this.id}/output.m3u8`
   }
-  // get clientProgress() {
-  //   if (!this.clientCurrentTime) return 0
-  //   var prog = Math.min(1, this.clientCurrentTime / this.totalDuration)
-  //   return Number(prog.toFixed(3))
-  // }
   get isAACEncodable() {
     return ['mp4', 'm4a', 'm4b'].includes(this.tracksAudioFileType)
   }
@@ -137,7 +145,7 @@ class Stream extends EventEmitter {
   }
 
   async generatePlaylist() {
-    fs.ensureDirSync(this.streamPath)
+    await fs.ensureDir(this.streamPath)
     await hlsPlaylistGenerator(this.playlistPath, 'output', this.totalDuration, this.segmentLength, this.hlsSegmentType, this.userToken)
     return this.clientPlaylistUri
   }
@@ -251,7 +259,7 @@ class Stream extends EventEmitter {
 
     const logLevel = process.env.NODE_ENV === 'production' ? 'error' : 'warning'
 
-    const audioCodec = (this.tracksAudioFileType === 'flac' || this.tracksAudioFileType === 'opus' || this.transcodeForceAAC) ? 'aac' : 'copy'
+    const audioCodec = (this.mimeTypesToForceAAC.includes(this.tracksMimeType) || this.transcodeForceAAC) ? 'aac' : 'copy'
 
     this.ffmpeg.addOption([
       `-loglevel ${logLevel}`,
diff --git a/server/objects/files/AudioFile.js b/server/objects/files/AudioFile.js
index 0ecc5fb1..d20dc367 100644
--- a/server/objects/files/AudioFile.js
+++ b/server/objects/files/AudioFile.js
@@ -1,4 +1,5 @@
 const { isNullOrNaN } = require('../../utils/index')
+const { AudioMimeType } = require('../../utils/constants')
 const AudioMetaTags = require('../metadata/AudioMetaTags')
 const FileMetadata = require('../metadata/FileMetadata')
 
@@ -102,19 +103,12 @@ class AudioFile {
   }
 
   get mimeType() {
-    var ext = this.metadata.ext
-    if (ext === '.mp3' || ext === '.m4b' || ext === '.m4a') {
-      return 'audio/mpeg'
-    } else if (ext === '.mp4') {
-      return 'audio/mp4'
-    } else if (ext === '.ogg') {
-      return 'audio/ogg'
-    } else if (ext === '.aac' || ext === '.m4p') {
-      return 'audio/aac'
-    } else if (ext === '.flac') {
-      return 'audio/flac'
+    var format = this.metadata.format.toUpperCase()
+    if (AudioMimeType[format]) {
+      return AudioMimeType[format]
+    } else {
+      return AudioMimeType.MP3
     }
-    return 'audio/mpeg'
   }
 
   // New scanner creates AudioFile from AudioFileScanner
diff --git a/server/utils/constants.js b/server/utils/constants.js
index 51f7adb5..6a5283f7 100644
--- a/server/utils/constants.js
+++ b/server/utils/constants.js
@@ -31,4 +31,17 @@ module.exports.PlayMethod = {
   DIRECTSTREAM: 1,
   TRANSCODE: 2,
   LOCAL: 3
+}
+
+module.exports.AudioMimeType = {
+  MP3: 'audio/mpeg',
+  M4B: 'audio/mpeg',
+  M4A: 'audio/mpeg',
+  MP4: 'audio/mp4',
+  OGG: 'audio/ogg',
+  OPUS: 'audio/ogg',
+  AAC: 'audio/aac',
+  FLAC: 'audio/flac',
+  WMA: 'audio/x-ms-wma',
+  AIFF: 'audio/x-aiff'
 }
\ No newline at end of file
diff --git a/server/utils/globals.js b/server/utils/globals.js
index 781a0804..9b70d555 100644
--- a/server/utils/globals.js
+++ b/server/utils/globals.js
@@ -1,6 +1,6 @@
 const globals = {
   SupportedImageTypes: ['png', 'jpg', 'jpeg', 'webp'],
-  SupportedAudioTypes: ['m4b', 'mp3', 'm4a', 'flac', 'opus', 'mp4', 'aac'],
+  SupportedAudioTypes: ['m4b', 'mp3', 'm4a', 'flac', 'opus', 'ogg', 'mp4', 'aac', 'wma', 'aiff'],
   SupportedEbookTypes: ['epub', 'pdf', 'mobi', 'azw3', 'cbr', 'cbz'],
   TextFileTypes: ['txt', 'nfo'],
   MetadataFileTypes: ['opf', 'abs', 'xml']