Placing an Audio Spectrum Effect on top of a video.

I'm wondering if it's possible to use the audio spectrum effect on top of a video layer. That is, the video is playing while there is an audio visualizer *on top* of it. My goal is to produce a video podcast, but add some style to it by having each podcast member have their voice synced to an audio visualizer while there are video clips playing in the background.
Is this possible with After Effects, or any of Adobe's products at all? Every time I place an audio spectrum effect on, I can hear the audio of my video clips, but the visualizer refuses to show on top of anything other than the black background that appears the moment I activate the effect.
Can anyone help? Thanks.

Place the audio in the comp and then add a solid layer. (comp size)
Next, go to Effects, Generate, "Audio Spectrum" or "Audio Waveform" depending on what you'd like.
You can apply the waveform directly to the video layer, but placing it on a separate layer allows separate adjustment of both layers independently.
There are quite a few parameters that can be adjusted, however the defaults should be fine for most things.
Here's a nice tutorial on the effect:
   http://www.motionworks.com.au/2009/08/effect-audio-wavefor/
--Desmond

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