I already posted my experience over a Valve's forum but I guess this is the better place for it:
http://forums.steampowered.com/forums/showthread.php?t=653808Audiosurf is 99% of the time completely and utterly unplayable for me because I frequently experience just about every single critical bug already listed in this forum and a few more. Interestingly different ones on each start.
My system:
AMD Athlon 64 X2 4200+
2GB DDR400
Ati Radeon X1900 XT with 512mb
AC'97 Soundchip from Realtek
Windows Vista Ultimate 32bit with Service Pack 1 (final, from TechNet) with German and English MUI
Ati Radeon Driver v8.2 - WHQL - clean install - latest current version - default settings
Realtek AC'97 - v6280 for Vista - WHQL - clean install - latest current version
Dual-Monitor Setup with 2x 1280x1024
Bugs I experience (not all of them critical, the critical ones are bold):
* Audiosurf always starts in Windowed mode and always with the same odd resolution of 784x564
* Audiosurf can not be resized in Windowed mode, neither by the options more nor by resizing by dragging the border (the latter only happened after a clean install and seems top work fine now)
* The
Audio Browser is broken, the text appears outside of the box (to the left) and nothing can be selected, neither by mouse nor keyboard. The PopUp File Browser still works.
*
White Screen. The In-Game-Screen is White, nothing but white, like a Yeti in a snowstorm. I lovingly call it the "Blind Kung Fu Master Mode" -
http://www.youtube.com/watch?v=jR-5Q_kEZHo*
All songs are flat-lining. No matter which song, even the ones from the Orange Box soundtrack or the ones from Audiosurf radio are not analyzed correctly. Instead of a rollercoaster Audiosurf creates a single, flat, horizontal line that only varies in height for each song. All blocks are placed at the beginning of the line. It doesn't matter at all if one checks the "decode MP3s with iTunes" setting or not (iTunes 7.6 is installed)
*
No blocks show up on the tracks. This seems to be a direct result of the previous bug.
*
Wire-frame: No textures, no blocks, nothing ... just some pulsing backgrounds synced to the song
*
The track doesn't move at all. Seems to be a result of the previous bugs. The track is completely static, doesn't move, the ship hovers in one place and can only move horizontally.
* The cursor frequently disappears.
*
The game simply quits with no error message given.*
Audiosurf freezes when switching screenmode. It freezes at max CPU (one core) or just quits without error message.
Interestingly these bugs don't always happen and some are more frequent than others. I already did a re-download and as-clean-as-possible reinstall of Audiosurf, it didn't change anything. The randomness of the bugs makes me believe that there might be a race condition on startup.
The songs
flat-lining is the most frequent critical bug that makes the game unplayable and it happens almost all the time. Followed by "wire-frame" mode and "the road doesn't move"-mode including "there are no blocks anyways so why bother". "Quitting with not error message" happens much less often, followed by "White screen".
The most frequent non-critical bug is the "broken internal Audiobrowser", it happens almost always, but only almost. It is exactly as frequent as songs flat-lining, maybe they are connected, but at least ones my songs flat-lined without a broken Audiobrowser.
Out of about 50-60 starts of this game (before and after a re-install) I could play without any of the critical bugs exactly
twice! Actually more like 1.1 times, since the second time I could play ONE song successfully and then the whole thing white-screened on the second one.
If you think I'm making this insanity up: Why should I? (and I also can document most of the above with screenshots)
I actually almost talked a few friends into pre-purchasing this seemingly great game like I did. I was planning to write a review on one of the top-100 German blogs, and I was hoping that I could praise it.
I'm just incredibly disappointed and I'm currently thinking of simply reviewing the piece of junk that Audiosurf is on my machine instead. No praise there ...

But I'm still hoping that these issues will be fixed very, very shortly.
How do I get a refund if these issues will not or can not be fixed within the next few days?