On my old itunes on my other computer all i had to do to sync new downloaded apps to my iphone was plug my iphone in. Now on my new computer with a new itunes it won't do that. I authorized the computer. and i pressed file and clicked "Sync iphone" but all it does is says "syncing" and "finishing sync." without even syncing anything. Ughhh. Do i need to restore my iphone or will that not make a difference?? ANY SUGGESTIONS AT ALL ARE EXTREMELY HELPFULL. 