Thanks for the replies. I got this working by updating to the new nVidia driver, and then switching WINE to using ALSA for sound (other tutorial said to use OSS if it didn't work with ALSA. . . I'm guessing nVidia drivers caused it not to work, then OSS caused more trouble once that was fixed). Tutorial is here BTW, once you get it working there's some useful comments at the bottom about some registry keys that speed it up too: http://www.fsckin.com/2007/10/15/how-to-run-team-fortress-2-half-life-2-hl2-ep-12-in-ubuntu-using-wine/
