I have a similar issue. I deleted a DRM file by accident and now my music skips if it plays at all. No music player plays the music correctly now. I need to somehow reflash stock files back on the phone since copying from one phone and placing it back did not resolve issue.
I gotcha alllllllll, I bricked mine within a couple months of owning it! STILL can't find a custom recovery ROM, so I sit with a $300 paper weight! Grrrrrrr
.......S T I L L W A IIIIII T I N G! SIGHhhhhhhhhh