Audio distortion in preview and publish

Hi,

The .wav files that I imported into Presenter (Import Audio feature) sound fine when I listen to them in the "audio editor" and when I "sync animations". However, when I "Preview" or "Publish" they sound like I am in a tunnel. The only thing that may have changed since the last time I published is that I upgraded to Windows 7 (from XP).

To resolve the problem, I have tried different Presentation Options settings. They are currently set to Quality, Custom, Lossy = 75, Resize = 2, and audio bitrate = 64kbps.

I used Articulate to record the audio.

Any suggestions on how I can get the audio to sound "normal" when previewing or publishing.

Thanks in advance!