> I am thinking about building a PIC based flasher that flashes to
> the beat of the music.  I am sure that it has been done before, I
> just can not seem to find it via Google or on the PIC_List archives.

Google for color organ circuit

eg top result

http://www3.telus.net/chemelec/Projects/Color-Organ/Color-Organ.htm

or sound-to-light circuit

http://www.faszl.com/soundlight.htm

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