Have you resynced with Emplode?
I went back to v1.03 from 2.0b3 and had same noise on almost all files did the reboot -resync thing and all was back to normal. I know your case is a little different but I read somewhere on here that it had to do with the meta? something being clobbered.

OK here's the thread on that here

#695-Mk2/8 colors-12Gig w/Tuner- awaits v2.x & Voice Recog.