Connect360 is an app for your Mac that lets your Xbox 360 stream iTunes playlists and iPhoto photo albums from your Mac. According to Nullriver, the makers of Connect360, the software will automatically detect your Xbox and enable vice versa. It supports all of iTunes music formats and most image formats. Unfortunately it's not free—though it's beta software, Connect360 will cost you $10—but there is, of course, a free trial.