Just got a Touch yesterday! Haven't even plugged it in yet. I have a PC and a Mac. I just called support and they said as long as I format it to Windows first that I could then plug it into the Mac and have that iTunes be functional as well (as long as I don't sync it of course). Can anyone validate this for me? I have stuff on both computers that I would like to load on to the Pod but don't want to mess it up or wind up having it erase.