The “equalizer” visualization is actually pretty easy to do in flash. You just call SoundMixer.computeSpectrum() to get a bytearray of the values, and then use charting, or whatever pretty technique you want, to render them.
Myspace has a new audio player, and it’s kind of silly. They added a real equalizer (as in, it actually reflects the audio being played and doesn’t just randomly dance around). I don’t know how hard that is, but I’ve never seen anything but fake EQ’s before.




