Just my best guess, GCSHEPH, but I think your problem is your
Carnegie Hall audio set up. Have you tried getting rid of the
preamps, external cards, and expensive microphones, and just using
the audio recording hardware that came with the original PC (or
that you can pick up at Best Buy for $29.95)?
Here is what I think might be happening: You equipment is so
sensitive that you are picking up highway sounds from passing cars
in neighboring states, or perhaps the buzz from fluorescent
lighting in the building next door, and that is what you perceive
as "white noise". I'm being funny, of course, but though my
examples are in fun, my advice is dead serious. Try "dumbing down"
your production computer to just the basics (which Captivate was
designed for), and see if you have better luck then.
Best of luck to you!!
.