Creative yesterday announced the ALchemy application which provides legacy support for titles which use Direct sound's hardware audio abstraction layer that has been remove in Microsoft Vista, those titles apparently include World of Warcraft. So if you're planning to install Vista and have a creative cars you'll be needing to try this little application.

"The result of Microsoft’s removal of the hardware audio abstraction layer for Vista will confuse many gamers," said Steve Erickson, vice president of audio at Creative. "Many people who have experimented with popular legacy games on the Vista beta release have been unable to experience multi-channel audio, with Creative and other sound cards, and even with motherboard audio. This is not something that a driver update can fix. The good news is that we have invented our Creative ALchemy application, so Sound Blaster X-Fi owners can experience the same multi-channel audio quality that they enjoyed with Windows XP."

You can download a beta of the software at http://preview.creativelabs.com/alchemy/default.aspx