this is ONLY for the xbox 360 version

http://www.mediafire.com/?sharekey=fdf4f1773666296791b20cc0d07ba4d2e66f2dcb be596359

steps:
download the 5 part RAR.
extract, burn to a cd or dvd (dvd recommended, cd has massive load times)
put on 360.
it will say the dvd contains mxied media.
go to "my demos"
load it up.
enjoy.