I've decided to add a Mac Mini to my house, rather than constantly running my MBP on power with a 2.5TB USB connected, serving my 3 Apple TVs. The idea will be to run the Mac Mini headless, running iTunes, with my USB drive connected, always available to the Apple TVs, leaving my MBP "portable" again. Winner! I just wondered how every else with this setup manages things like iTunes, syncing iPhones/iPads, etc. Obviously all my movies, TV shows, etc will be on the Mac Mini, so they be available to Apple TVs all the time, but I do like to sync some TV shows to my iPad for watching. Is it best to simply sync my iPad/iPhone to the Mac Mini (bit of a pain as it'll be hidden down low on a shelf), or keep 2 copies of iTunes Library?