Ive had my ipod since august, and ive never really needed a reason to do this. But i brought a few things on the itunes app on the ipod and ive hooked it up to my laptop now, and for some reason i cant transfer the music on to my itunes on my laptop. Every time i click sync its telling me i need to erase everything and re-sync it. If i do this, will i lose the stuff that i have brought via the ipod? Ive been battling this now for a good few hours, please help!!