There are a lot of misidentifications of the BIOS due to differences in what the file is named and the BIOS update. I can't rememeber the specifics but, for example, my BIOS version is 1.014 and CPU-Z identifies it as 080009. If that's the issue, there's no problem. I've seen a number of posts expressing concern over that inconsistency.
The sound is a fun issue. First, recommended install order is sound drivers dead last in the queue. In fact, for best stability do not install the card until after all the other drivers (including DirectX) are installed. It sounds like there are worse problems than that if the on-board is acting up. I had some problems with my SBLive and HT, but a number of people report success in running it on this board. I'd suggest different PCI slots (slot 4 preferred), but again the onboard issue seems to indicate something more. Try running the extended tests in MemTest to verify there are no memory issues. Also, are you o/c'ing? It might be a bus issue but that's probably grabbing at straws. I've known some people that had some severe conflicts with the card I run (Audigy2) and I have no real problems. More proof that not all these boards are created equal (seems to be a wide variance in manufacturing). You can also play with latencies using PowerStrip just in case you're running a bus hog somewhere. ATI always sets theirs too high, Creative too low, but I'm guessing more along the lines of either memory or a weak Northbridge. Try increasing the VAGP a bit, it seems to fix a number of Northbridge issues (I'm still not sure why, just that when a possible NB issue arises it's my first advice).