Build 44 is now available. It has a couple of changes that might help.
Output format (in DSP) lets you take 5.1 output and downmix to stereo.
Jim - I don't believe your timing on this!
Unfortunately there's both good and bad news. Setting the output format in Audio DSP to down-mix to 2 channels gives good audio - the dialog is now at proper volume. Besides setting the down-mix, I had to set in Video to 'Use the same Audio Device as in Audio'.
The bad news is that I have serious pauses (is it called studdering?) in the video. I have changed back the 'Same Audio Device..' to it's original setting of EMU-0404USB (My DAC) and the video is fine, but of course dialog is weak. Have gone back and forth a few times and it always shifts the same way.
Does this belong under 'Weird & Wonderful'?
Rod