Yet another problem with local files on mobile devices

[undeadninja125]

I am trying to get some local files that are contained within a playlist that has mostly tracks from the Spotify library in it. I go to the desktop client on my computer, and the files play just fine. I go into the playlist downloaded onto my Galaxy S4, and it does show the green arrow, BUT when I go to play the song, there is no audio. The rest of the songs work just fine, but not the "local files". 

[Joe]

What if you create a new playlist containing those local tracks and synch that to your S4; do they play then?

[undeadninja125]

That does not work either. It's the same problem.

[Joe]

OK. To eliminate the possibility that there is something wrong with the original files, try copying them to your mobile and playing them with the built-in android music player.

[undeadninja125]

They work fine in the stock music player.

I think I may have pinpointed the problem.

They are iTunes files, and even though iTunes plus makes their music files "DRM free", they are still protected.