just bought one. any of you guys know how to detect an mp3 that won't work on the ipod before i transfer it from the pc to the ipod? i wasted a few hours with the ipod trying to fing songs that wouldn't play. i found around 50 of em, w/c means that i have to convert them to AAC which is really arduous. so please, if you can gimme a few tidbits it would really mean a lot tnx