Hi guys! So i've had a windows xp pc for a long time and have been using itunes on there with my ipod etc.. now i have got a macbook, and i was told that i could just plug in my ipod into my mac and all the songs would transfer onto my itunes perfectly.. well, i plugged my ipod in and itunes came up, and a message pops up: "The Ipod "Dom's Ipod" is synced with another Itunes library. An Ipod can be synced with only one itunes library at a time. What would you like to do? "Erase and Sync" - Replaces contents of this ipod with the contents of this library. "Transfer purchases" - Copies itunes store purchases this computer is authorised to play from this ipod to this itunes library. So im not too sure which one to click! Please help! i dont want to lose any of my music and movies!!