I have this .wav file that plays fine in iTunes, but for some odd reason when I try to play it on my iPod, the iPod reverts back to the main menu. I tried reseting the iPod while holding down Menu and the center button, but nothing. iPod is 4G with black and white screen (40GB) and iTunes 7. Any ideas? P.S. While attempting to play the song on my iPod now I noticed that if I pause the song before it goes back to the main menu and I click the center button so I get the seek mode, I can scroll throughout the song, but when I stop scrolling the little dot goes back to 0:00. It's as though the iPod thinks the song is 0:00 long. Weird.