I don't have an android phone but my all-time media player has been VideoLAN (VLC) because it plays most codecs with no codec packs needed and it runs on all the OS i use i.e. Windows, Mac OS X, and Linux
Kutafuta free things all the time tena sio poa. Just promote the Poweramp guys for once and get the pro version on the Play Store for only 400 Bob.
I used to patch Poweramp but it would stop working unexpectedly in the worst of places like in a mat or nikiwa kwa street. Imagine uninstalling/reinstalling/repatching every 2 weeks in the middle of the street.