My player is new. It is working well for video but when playing a MP3 file it only plays about 2/3 of the file before skipping to the next. MWA files it plays all the way through without a problem.
Is that every mp3 or just some?
How are you playing the files, via a a connected drive, over a network, via network shares or media server.
Did you make the files and have they got tags embedded?