Posted for "Chuck Jensen" <cjensen@dts9000.com>:

 Been there, done those.  A couple of starting points.  1) aggressively
 twist the power wires together, 2) bring all of the grounds back to
 power converter...don't daisy chain the ground wires or ground them
 locally.  After doing this, I thought I'd gone deaf--no sound.
 
 
 Chuck Jensen

"""
 Can any of the electrical gurus tell me what I might do to get rid of
 some power supply whine?  I installed some electroluminescent strip
 lighting above my panel a while back, which I love, but the power
 supply from the thing is whining in my headsets (directly
 proportional to rheostat).  I have been dealing with it, but it is
 extremely annoying and I wuold like to get rid of it.  Thanks.
 
 Steve Reeves
 Glasair 1FT 38SR
"""