My X3DAudio talk from Gamefest 2010 is finally posted, and available for download.  Here's the link: http://www.microsoft.com/downloads/details.aspx?familyid=00852bf5-714c-49e5-bcf2-b14881f8d007&displaylang=en.

There's an audio recording, along with the slides from the talk.  Let me know what you think.