I know that more than 98% of the people here got the game for multiplayer, but I love doing different runs in single player.
But the audio is (to be nice) crappy. In the open field areas and the VTOL rollercoaster with Psycho, the audio gets extremely choppy, or flat cuts out.
I installed the 5GB game to my hard drive, but dunno if that's the problem.

Heard about this happening in mission 3 right? it's all over the xbox forums

Ya mission 2. The game has alot going on in some parts and xbox seems to be unable to handle it, so sounds gets staticy/choppy.