If you want you can have a look at this software.
Cartouche. I wrote it for doing my presentations.
I have not updated or used it for a long time, but if I remember
You can trigger wave file when the powerpoint presentation/slide is started.
It uses the powerpoint viewer to play powerpoint.
All support programs are at this location.
http://www.presentation-software.com...cartouche.html
Any problems let me know.
Download the user guide, its in PDF format.
Note there is a software key for it, so it will run in demo mode.
If you like it, I could send you a key!!!!!
Another project that time run out on me.
John