Watching .mp4 on RGH

Using FSD what is the best player to watch .mp4 files and how do I install the optional update to be able to do such? I saw this, but it is back from 2012 wasn't sure if there was a more recent way to do such.

EDIT--
Sorry forgot to include the link

http://digiex.net/downloads/downloa...ayer-port-xbox-360-plays-hd-mkv-jtag-rgh.html