How to extract a WMA from an AVI?

[Dekku]

I've found an AVi clip of a movie I was looking for (and that's good) but the I got problems with the audio (and this is bad!)
It plays bad in Videolan and doesn't play at all in MPC and Winmedia Player.
This are the results from AVICodec:

Video : 72 MB, 935 Kbps, 25.0 fps, 320*240 (4:3), DX50 = DivXNetworks Divx v5, Supported
Audio : 2.49 MB, 32 Kbps, 22050 Hz, 2 channels, 0x161 = Windows Media Audio V2, Supported

So it is a WMA audio track.
Before I give up, I'd like to try to convert the audio to another format and put it back in the file.
I tried to demux the audio with VirtualDub and VirtualDubMod, but what I get is a WAV file that no software is capable of dealing with.
Ideas?

seems like it plays at the wrong rate, because it starts and stops, but no words are skipped

[Skelsgard]

I've found an AVi clip of a movie I was looking for (and that's good)
Might be a Rule #6 violation (no discussion of downloaded material).

[Dekku]

Might be a Rule #6 violation (no discussion of downloaded material).

Don't worry, it's not a feature movie. It's a TV recording.

[gameplaya15143]

Download and install the divx ;) audio codec (it is a hack of the wma v2 acm codec, I think free-codecs.com has it)