I haven't tried it yet but I think this is what you are looking for. I am having a wonderful time with my RGH console, playing all GOD games. Will be doing mod for two friends in coming week
http://digiex.net/downloads/downloa...y-xbox360-download-homebrew-media-player.html
http://digiex.net/downloads/downloa...y-xbox360-download-homebrew-media-player.html
does jtag xbox play all movie formats i.e MKV ,Mp4 and some other that are not supported by normal 360 ?