I've got a AppleTV Gen 1 with 160GB hard drive, it syncs to whatever I tell it in iTunes. That's a royal PIA for me, a hobbyist photographer, I use Aperture with 9 different aperture libraries..... I have to go into Aperture, choose the specific aperture library, then exit it. Then go into iTunes, select aperture, then it will sync to that.....way too time consuming, and sync takes long-long time I bought a Apple TV Gen 3, not opened yet. If I decide to keep and open that, can I on the fly from the Apple TV Gen 3 menu on the HDTV tell it what aperture photo library to view for slideshows? Or is that still dictated by iTunes?