Flash audio visualizer using ActionScript 3.0

For my final project I'm going to need to generate graphics based on user input using sensors that may detect motion, heat, sound, etc. Today I've been working with ActionScript 3.0 in Flash to create a simple visualizer that reacts to any sound file.
Using the computeSpectrum method from the SoundMixer class you can convert a sound file into graphics. The code looks pretty daunting if you're just learning ActionScript as I am but I found a great tutorial from Tom Green on Community MX that explains how it works really clearly.
I'm going to experiment some more over the next few days.
If anyone has any tips send them my way!