m_MediaPlayer = MediaPlayer.create(context, soundFromResource);
m_MediaPlayer.setVolume(0.99f, 0.99f);
m_MediaPlayer.setLooping(true);
m_MediaPlayer.setOnCompletionL
Apparently there's an issue with Android 5 devices which use the NuPlayer instead of the AwesomePlayer.
You can check it by going in the Developer Options, under the Media section there should be Use NuPlayer (experimental). I've unchecked that and it appears it's alright now.
I haven't been able to figure out how to fix this issue, so I've hacked it a bit. I've set some flags in the code and when it enters onCompletion, if the user hasn't specifically stopped the sound, i restart it there. If there's anyone with a better fix, let me know and i'll update this answer.
Here's the issue: https://code.google.com/p/android-developer-preview/issues/detail?id=1695