Ok, I have iTunes for Windows running. I love it! I am ripping all my CDs, but my question is will I have to do it again when I buy my PowerBook? How do I "transfer" a library? Also along those lines, say I buy something from the iTMS, how will I transfer those songs? I don't want to re-buy them. I guess that leads me to a third question: how does the "3-playlist-limit" work? How Nazi is it?