Hi, I have an iMac upstairs which has my iTunes library on, me and my girlfriend both use it for our iPhones, (different playlists) what I would like to do is buy a mac mini to use downstairs in the lounge as a media center connected to the hi def tv, my question is, can I link the two macs via wireless then stream the music? Would this work with different playlists? Could I use the media function downstairs but stream from upstairs basically? could I also use the mini as a back up source via time machine? And not so important at the minute but can the mini be used for Apple TV? Thanks, look forward to your comments and suggestions!