XBMC4Xbox (which was the original part of the XBMC project and formerly named Xbox Media Center) is a free and open source media player software made solely for the first-generation Xbox video-game console. Other than the audio / video playback and media center functionality of XBMC4Xbox, it also has the ability to catalog and launch original Xbox games, and homebrew applications such as console emulators from the Xbox's built-in harddrive.
XBMC4Xbox is a third-party developer spin-off project of XBMC for Xbox, with still active development and support of the Xbox. This project was created as a fork of XBMC for Xbox as a separate project to continue having a version of XBMC for the Xbox hardware platform, and was initially started by a few members from the original XBMC project in order to fully breakout the removed Xbox branch support from the official XBMC project and let it continue as a totally separate project, which was announced on the 27 of May 2010.
Main Page: XBMC Features and Supported Formats
Currently XBMC can be used to play almost all popular audio and video formats around. It was designed for network playback, so you can stream your multimedia from anywhere in the house or directly from the internet using practically any protocol available. Use your media as-is: XBMC4Xbox can play CDs and DVDs directly from the disk or image file, almost all popular archive formats from your hard drive. XBMC will scan all of your media and create a personalized library complete with boxcovers, descriptions, and fanart. There are playlist and slideshow functions, a weather forecast feature and many audio visualizations. Once installed, your Xbox will become a fully functional multimedia jukebox.