Help movie sound issues

[macprv]

OK so I'm playing some mkv files on my xoom and all is nice and smooth, sound is fine, but after a few minutes of play back the sound goes off, I have to close the movie and reopen it again just to bring back the movies sound, but after a few more minutes the sound goes off again and again... I already tried an alternative player and I get the same thing... if I play the same file in my PC, it plays just fine with no audio issues...


Any ideas?

Thanks!!!