Thanks for the tweak site mumpcake. Looks like fun! Truth to tell it had been so long since I built this machine that I had forgotten that it had onboard sound. As I recall the onboard sound didn't work well in the first place, so I ignored it and it didn't seem to cause any problems with Sonar etc. to just let it load, now I'm thinking I'll find the specs and see if there isn't an onboard jumper that will disable it in hardware.