Thanks for the welcome!
I suppose its possible that either my Creative Audigy2 or 8800GTX are causing the problem . . but it is definitely tied to Flaming Cliffs. The game ran fine prior to installing that addon. So I'm a bit baffled. And yes . . . the drivers are up to date for both devices <grin>. I cant test (easily) using the MB's onboard soundcard to verify. But then, why would it have run fine with plain LOCKON but then chock with Flaming Cliffs? Curious. Something definitely changes.
The advantage to the tool I have referenced is you do not have to change the affinity through the Task Manager manually each time you start the game. After setting it once, the utility remembers it and automatically does it for ya. Much easier. And being freeware . . . its free legally. BONUS!
In either case . . this may help somebody.
FYI