Forget Windows Media Center: Use a Free Linux-Based Media Center System (howtogeek.com)

Does xbmc stream to an Xbox? Or is the name unrelated to the game device? It doesn't really say. The article seems to argue i should switch from my current windows media center then goes on to ask which half of what it already does do I want to keep?

By far the thing of most concern for me would be the channel guide, and that is not addressed here.