On Dec 2, 2015, at 01:58, aldum <spongyabob gmail com> wrote:
In my experience using only "export QEMU_AUDIO_DRV=alsa" in conjunction with "-device AC97" works nicely. I never had to bother tuning other variables mentioned above.
On Windows 10, I use this driver  but I install it via right click on the Device Manager not from running the executable setup. If I recall correctly Windows 7 automatically recognized it.