2nd AC3 track crashing most players in WinXP

[pdontthink]

I have determined that whenever I add a 2nd
ac3 track to an avi with NanDub, all the
players I have will crash to some degree or
another. It might also be related to the
fact that I'm running WinXP Pro.

WMP can't even deal with the avi (immediate crash).
ZoomPlayer sometimes crashes when I open it,
sometimes it crashes when I close it.
PowerDivX crashes when I try to switch to
the 2nd track.

I suppose I can live with ZoomPlayer, since I
can get it to work given enough patience, but
if anyone has any input, I'd love to hear it! :)