XAudio2 problems are still up in the air, as they may be related to version differences in DXSDK installations of people building the DLL. Note to compilers: please update your DX SDK to the most recent version (Aug 2008) if you haven't already.
git-svn-id: http://pcsx2-playground.googlecode.com/svn/trunk@266 a6443dda-0b58-4228-96e9-037be469359c