Suggestion:
Plug your ipod into the xbox with usb, and make sure it is recognized. Now hit the xbox button and on one of the tabs you'll see "select music" down at the bottom. Select your portable device and this should replace the games soundtrack with your own. You can't however control this through the radio stations in the game! This works with all xbox 360 games. You can also stream music from your networked PC this way. To return music control to the game, go back to where you selected the music and hit X.
