How to filter audo on Linux for pumping to RGB-LED strips?

Hi,

There's some RGB LED's at a Hackerspace:

 - http://forum.makehackvoid.com/t/led-uplighting-status/179

I asked a geek I know how to filter sound from linux to drive different
colours in the LED's.

He said "That's easy - just use the following command":

> pamon --latency 100 | hexdump -C

The command 'works'. I've no idea what it's doing.

Driving the rgb-led's is easy, just need an rgb# to send.

Help !! How do I extract the numbers that I want ?
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