so i just got back from a long trip and i pluged in my ipod to my computer and it says syncing ipod do not disconnect and i tried to add a song to my ipod music library but it wont let me and when i try to click one of the songs in the music section of my ipod on itunes it wont let me. and usually the songs on my ipod in itunes are black so i can play them but now they are light gray and i cant click on any of them. what the hell just happened?