hey guys. i've got a new iBook coming in the mail (i'm a switcher!), but before i buy an iPod (and i'm definitely waiting to see what happens on Friday's event. Too bad I'll be traveling cross-country during much of the day) i have some questions. do i have to do anything to my music to put it on the iPod? in reading other threads it sounds like you have to encode using (i think) aac? is that right? so i guess i'm just wondering this: can you use the mp3's without doing anything to them, or do you have to encode/compress/alter in any way? forgive me if i've missed something here.