hum cancelling

[Michael Peters <100041.247@CompuServe.COM>]

I'm having continuous problems with humming. With my setup slowly getting
more elaborate and containing more devices and cables, it's getting worse,
and I'm already at the point where the humming is so bad I can't do any
recordings at home which are good enough for publication. I would love to
get one of these new 8-track disc recording machines, and make my own
CD-ready recordings, but as long as there is audible humming no matter what
I do, this wouldn't be worth it.
 
Any general ideas what to do about this? Simply turning around the cables
doesn't seem to help. Is there hope at all? Is it possible to run a heap of
devices (2 computers, recorders, tuner/amplifiers and CD players, an old
Minimoog, sampler, DAT, loop delays, volume and other pedals, Vortex,
guitars, reverb) connected by a jungle of cables, without having any
disturbing hums? There's not enough space and I can't afford setting up
a professional studio in my room.
 
-Michael