Because I didn't see any reference to VirtualBox but just for qEmu I would like to report the great success running the demo-cd under VB version 4.3.12 r93733 without any special configuration. The network driver and sound system is working perfectly.

It's interesting also to report that I configured the virtual machine as type=other and version=L4. The version=L4 is not a must but it's remarkable to see that they are aware that the future is not Windows and Linux.