Changes since version 2.9 beta 3:
- Fix several bugs in the x64 version that sort of would have kept it from working under XP 64 almost entirely.
- Fix regression issue where enabling hardware buffer could have caused a crash.
- Fix regression issue that caused a crash when _no_ WDM audio devices were enabled.
- Put in stuff that is supposed to provide a workaround for a Conexant HD Audio input issue. So far, results are unconfirmed.