I'm considering buying a 360 Elite. Does anyone have one? I'd really like to know how usable it is as a media streamer. Will I be able to play xvid & avi files from my PC to a tv using the 360 accross a wireless network? I'm not interested in flashing it or modding it in any way.I'd just like to know if it can be used as a media streamer straight out of the box.