By the way, FirebrandX also demonstrated that due to ATI's cards being underclocked by their drivers too much in 2D mode, this can also manifest as unstable VSYNCing and thus be followed by sound stuttering. If you've already edited your CCC profile to rectify this and the Creative card was still the culprit, well, that only adds to the evidence against Creative's drivers.
Yeah I saw that post a while back in my quest to solve this problem, and while it didn't help me with nestopia, it did fix some other problems by bumping the clock rate.
Their drivers are a buggy, bloated mess which barely works adequately, and yet over there no one seems to care.
Yeah if only I could find a non-Creative card that works as well in 3D games (new and old), I'd ditch this one in a heartbeat.