I searched & searched for this particular "question," but it is an unusual one that can be worded a million different ways... argh! I am getting my iPhone on Friday. I understand how it syncs, but I am confused/uninformed on one other thing. Inside of iTunes, when I am syncing, am I able to tell it NOT to sync with my main library, and just the playlists I select? Reason is, I am wanting to designate 3G to music, and 3G to movies/TV, and have designated playlists accordingly. I have 14G worth of total music in my library, but I want to know exactly how much I am "selecting" to sync, and the only way to do it (that I know of) is to create a playlist, then check the size of that playlist... make sense? If I can/should do it a different way, please advise...!