Certain music files not playing

Could be that the HTC music player doesn't play Windows Media Audio. Many Android devices own music players don't do WMA, otherwise they got to pay millions to Micro$oft in patent licensing. Try a third-party player like Rocket Player, I know that plays WMA no problem.

 

I am having the same problem with my phone. There are a few songs in my library that are WMA that refuse to play on Android but are otherwise intact on a PC. Normally I have no problems playing WMA files through Play Music or ES file explorer, but these refuse to play. Also have some mp3 that have bad time signature and cut out halfway through on one player app. These files have been copied XXX times over however, Perhaps they are corrupt.