audio problems with TMPGEnc
 

I posted this on the Q&A column, but it looks like no one read it over there yet so please forgive the dual posting:

I've been having a problem using TMPGEnc on some videos.

When I convert from the AVI file brought in on MiniDV to an MPG1 format, sometimes the audio gets weird; like it drops an octave or two and has a slight echo for no reason. It only does this on some files though, not all of them, and the AVI file sounds fine.

Here's a link to an example of an MPG1 with this audio problem: www.amateur-flix.com/sound.mpg

Any ideas what could be causing this or how I can fix it?