Finally got sound working in a Windows 7 64bit KVM virtual machine with Spice. There are a few conditions for it to work:
- ICH6 audio
- Spice guest drivers installed NOT VNC
- QXL video
- QXL driver (64bit)
Since I’m using Windows 7 Enterprise 64bit, I had to build and digitally sign the driver. Not difficult at all but PITA. I’ll write a howto blog post tomorrow.