I just got the demo to work on Win2k via same black hackery magic, and I have to take the following statement back:
From the videos I've seen on YouTube of AudioSurf, it doesn't seem to match the level that closely to the beat or anything either.
I just played an Opeth song (The Moor) with it. It has a quiet, acoustic intro, and AS matches that with a slow uphill ride. If you have listened to the song as often as I have, you know that it then goes abruptly into a heavily distorted death metal section, and you actually see that coming in AS because at that instant the track goes into a steep descent, and there's a kind of tunnel too. The moment when I went over that hump and speeding down the track, like a rollercoaster, with Opeth suddenly blasting out of the speakers, was for some reason one of the most visceral gaming moments I've had in quite a while. I even got slight nausea out of this ride, FWIW, and I'm usually not very sensitive to that kind of stuff.
I just might have to buy the full version (that game was just
made to play Opeth songs with it, what with their alternating quiet acoustic and heavy rocking segments).