I posted a similar question recently, but didn't get any responses so let me try to ask it this way: After you update your iTunes library (i.e. add videos, music, playlists) what triggers AppleTV to sync up these new items? In my case I'm streaming all my content to the AppleTV, but it still needs to sync up the library. Surely I don't have to manually sync the AppleTV every time. But after I add content to my iTunes library I don't see AppleTV sync automatically, so eventually (hours later) I give up and manually sync. What am I missing? Thanks!!