"Dmitri(Cabling-Design.com)" wrote ...
Hopefully, it is an appropriate NG for the subj. However,
if this is OT here, and there is a better NG, please advise.

There are several soundcard-specific newsgroups.
I'd bet that your chances of find an answer to your
question (if it exists at all) are substantially greater
there than here.

I'm running a Win XP application, capable of streaming
two completely separate sound streams through two
separate sound cards on the same PC. I do not need
stereo output, so I wondered if someone has seen a driver
or software utility of sorts that would split a regular stereo
sound card (SoundBlaster or anything else to that matter)
output into two completely separate mono channels, visible
to the OS as two separate sound cards. Is it even possible
technically?

It is possible technically, but there are so few of you that
need to do such a thing that likely nobody has gone to the
trouble of writing a driver for it. You can't put another
sound card into the computer? You can get them for $10.