Audiosurf costs $10. If you did not pay $10, you do not own the full game...
The demo allows you to play a few songs and no more.
LEFT4DEAD411.COM
Bet with disolitude: Left4Dead will have a higher Metacritic rating than Project Origin, 3 months after the second game's release. (hasn't been 3 months but it looks like I won :-p )