I have all my music, movies and TV shows on a Linux server running TwonkyMedia which streams them. As long as the audio and video are encoded in a format that the 360 can decode, the 360 can see your TwonkyMedia server and play anything from it. I have a PS3 as well as a 360 Elite and both work excellently as a media center for Twonky. I actually play games on the PS3 as well and am looking to sell my 360.