Non-MS Media player for Xbox

Some clever characters have written a media player for the Xbox. Currently running videos on DivX 3 & 4, it will soon have MP3 and Windows Media capabilities as well. This kind of thing has been on the Dreamcast for a while by bedroom developers, and given the supposed ease of development of the Xbox, I would have thought it’s something Microsoft would want to encourage. Apparently they’re trying to take legal action to stop it.