Converting stereo PCM/WAV to 5.1 Ac3 help...

[KillerBear]

I have been going nuts the last few days. Nothing I do will work.
I am trying to extract a stero audio stream from an AVI and re-encode it (upmix it) to a 5.1 ac3 to be burned to DVD.

What i have been doing is this:

1) Using VirtualDub to extract a non-compressed PCM from an AVI (not a direct stream copy).

2) Putting that file into BiDule to Mix it up to a 6 channel WAV file. I have been following this guide to do this: http://www.dtsac3forum.digitalzones.com/SAD51Bidule.htm
The file comes out to be about 6 times larger than the original, which would make sense.

3) Taking the WAV that Bidule created and using Besweet to extract 6 mono wavs from it. This is where the problem lies. I get an "unable to read file" from Besweet. I hate Besweet and she hates me! I have never been able to get'er to work right.
Or maybe the problem lies in Bidule?

What am I doing wrong? Is there a different / better way to accomplish what I want? I was planning on using Softencode to mix the final ac3 but I cant get that far.

I have placed a very small sample of the audio file and the resulting Bidule WAV of that file here:
http://geocities.com/killerbear1751/
If someone could download the 2 wavs and see if you can get it working I would be forever in your debt.

Thanks alot.

[KillerBear]

Hey again.. I just solved my own problem.
I was in Bidule and looking how the layout was set up. Whoever made the original layout had the outputs from each channel (L,R,C,SR,SL,LFE) all going into 1 recorder. Hence 1 WAV file.
Why would he do that if we are just going to break them apart anyways???
So what I did was just delete the 6 channel recorder he had and had each channel output going to their own file recorder!
Brilliant

So now it records 6 seperate mono waves instead of 1!!

I think this is the best way to mixup to ac3 5.1
I'll attach my layout to this post if you want to check it out.

[KillerBear]

Oops.... didnt attach that file the right way.
Here it is:

sad5.1updated.bidule