This whole thing makes me little
@ Microsoft. I realize they can't keep technologies around forever, but DirectSound is still used in so many things it's just dumb of them.
Plus, I could finish this project in XP SP2, but the person who wants to use it on Vista then gets no sound.
My case was: No sound for any feature on Vista with or without SP1, so downgraded to XP SP3 with still no sound but a different error message, finally uninstalling SP3 where everything worked fine.