Here’s a vero layout for another compressor; the ColorSound (SolaSound) SupaSustain. Note that this one runs on +18V and won’t work with a regular +9V battery.
Update (04.09.2010): Finished the SupaSustain build the other day and here’s the result. Haven’t had much time to play with it yet, but first impression is very good. That thing in the middle of the board is a regular optoresistor and a 5mm red LED wrapped in a shrink tube, same as on the Baja Trembulator. And remember to feed this compressor +18V.