Audio Synthesis - possible under flash 9!

Everyday I learn about more cool things that can be done in Flash 9. Apparently realtime audio is one of those things now, even though it is a little bit of a hack. Here's a page describing the technique. You should also check out some of the awesome examples on this guy's site. He has some really cool visual examples (including realtime physics and 3d raycasters) in addition to some very nice synthesizers (considering that they are done in flash). It would be nice if Adobe would add a more official way to do audio, instead of having to rely on the hack.