tbh i dont fancy upgrading my soundcard for one game, i have an old creative sb pci64 and it is 100% directx compatible and plays every other game/software audio/song/website i have purchased/visited to date without a problem, that this game will only run without sound isnt a user problem or even a hardware problem, its a coding problem, hell even with the games on system diagnostic it checks out as fine, my only warning is on my graphics card and it looks great when running.
keep the faith hudson, as annoying as it is mate
btw for those who told me to keep them posted i havent had a mail from activision tech support in 4 days now