Fix bug for certain scan types

Needed to look in to scanOptions to access the properties I wanted.
It's..... unclear to me if this needs to be done for those other ones as
well. I think so?

server/objects/mediaTypes/Book.js

@@ -357,6 +357,7 @@ class Book {
       return audioFile
     })
 
+    Logger.debug(`[Book] WE ARE INSIDE UPDATE AUDIO TRACKS ========================`)
     this.rebuildTracks()
   }
 
@@ -496,7 +497,6 @@ class Book {
     return markers
   }
 
-
   setChapters(preferOverdriveMediaMarker = false) {
     // If 1 audio file without chapters, then no chapters will be set
     var includedAudioFiles = this.audioFiles.filter(af => !af.exclude)