OT: visual effects for PC audio

["Tim Goodwin" <deepbass@earthlink.net>]

Is there a real time visual effects software program that generates
interesting patterns from selectable audio inputs?

I was thinking of something like a better quality winamp plugin that can do
the same thing with audio from my mixing board...

Basically, I want to have visual effects on a screen at our rehersals. :)

Thanks,

Tim