I guess you can call this a continuation of:
http://www.tacticalgamer.com/hardware-software-discussion/157809-distorted-sound-fraps.html

Because no one could help me.

Every time I try to record game play the sound is distorted. An example is below, I apologize for your ear drums.

http://www.viddler.com/explore/WanderFreeForev/videos/6/


It was suggested that I alter the volume of Stereo Mix, however, I can not alter it. For some reason I can only mute it. Even from Windows sound manager.

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This distortion occurs even with hardware acceleration set to none and sample rate converter lowered. I have uninstalled and installed codec packs only to find the same distortion.

I have run out of options here. I have no clue how to diagnose and correct this problem. Can anyone help me?

Info:
Windows XP pro