operaguy - try using these settings on the WAV file:

Mono
16-bit
44.1Khz sample rate

There are several variations of the .wav file format - the "Microsoft" flavor, Scott Studios .wav, and what is called "broadcast" .wav. If you can, I would recommend using another application to save the wav file, Audacity (free) is probably your best shot. I use the Microsoft .wav and it works fine. However, I am on XP, not Vista.

Hope this helps!
--Donnie