Done!
I won’t have time to code today so I’m considering my game done.
The procedural sound isn’t as nice as I wanted, there is only one level (but it’s a pretty hard one) and there is no high scores list (altough there is a score when you finish).
I had never used Flash before so I think it turned out fine. It’s not polished but it’s playable and works as a proof of concept of a hearing-only exploration game.
You can play it here: http://www.nogard.net/soundscape
I’d love to receive comments and bug reports. If any bug is found I might have some time to fix before submitting tonight.