Particles that dance to music II

Hey,

Was playing around with the Flint engine for AS3, created another sound visualizer. Looking for feedback on how I can improve it. Link to website can be found here: http://joeltong.org/blog/?p=35

SWF: http://joeltong.org/blog/flash/3dSoundSpectrum/soundSpectrum3D_2.swf

Thanks!

Best Rgds,
Joel Tong