Music files appear in different albums than folder structure would indicate
I ripped a book on CD and transferred the MP3s to my phone for listening. I have three CDs, each in a different folder (Book Blah Disc 1, Book Blah Disc 2, etc.)
However, when I open either of three music apps (Google Play Music, WinAmp and Shuttle) several tracks from Disc 2 are in the Disc 3 album and are missing from the Disc 2 album. Only 1 track is left in the Disc 2 album. I verified using my PC and ES File Explorer that the files are indeed in the correct folder.
I tried MortPlayer and it sees everything correctly.
Why would the tracks be showing up in the wrong album? I have a Nexus 5.