It's on iTunes, not on the CD. It's a bonus and it's almost for free too.I admit that I won't but this deluxe version from iTunes cause I rather buy the real CD of the album which comes with mp3's too.
They should have offered an iTunes download link in the game! There was never really a way to hear the song outside of the game, unless it was extracted.
I think it would have been a damn shame if we never got a better quality version of this song.
It's also a chance for the other people who had no chance to play the game to own the song now legally. Like 1% bought the game and everyone else downloaded it from somewhere cause it was too exclusive.