okay so it hasn't arrived yet, but what are the chances of being able to upgrade the Harddrive in the Apple TV? I was kinda hoping to be able to sync all my iTunes library over so I can access to all my music from the TV. Will the OS be held on the HD, if so how much space are we likely to lose? If the OS is held in flash, I imagine upgrading the hardrviewill be a lot easier! any thoughts?