Xvid Codecs and such

[Augurr]

Ok, here's a new one. I got a file encoded with Xvid, and can play the video, but I have no sound. If I load the file in WMP 10 and look at the properties it says "Nero Digital Audio Decoder" for the Audio codec. What is that?

Edit:
Found this ... http://download.divxmovies.com/divx_audio_402.zip . But that didn't seem to help either.

Edit 2:

Did better this time ... http://www.free-codecs.com/download/AC3_Filter.htm

use that it works