[Openal] No sound on XP/Realtek AC97

[Richard S. Wright Jr.]

I have a customer with Windows XP media center. He insists he has the  
latest OpenAL installed, but he gets no sound at all from my app.  
Other programs (non-OpenAL based) play sound fine. He has a realtek  
AC97 sound chip.

Anyone else here know of any widespread problems with this sound board  
(embedded actually) and XP Media Center edition? I've googled this a  
bit and found some conflicts with WinAmp reported (which we've ruled  
out), but nothing else.

Many thanks if someone else has run across this before.

Richard