I've now uploaded an 'all so far' zipfile (dw_all_pcm_20120312) which contains my preferred versions of the ones I adjusted.
A couple of them are earlier versions (or recreated in the same way) which I felt were better than my subsequent efforts.

As these mostly work well for me, I'm not at this point looking at doing much more to them, unless anyone has specific comments and/or requests.

I stopped trying to adjust the volume of the speech samples since even after I had got around the whole unsigned-but-actually-signed PCM data thing and got some nice clean volume-reduced versions, it all went horribly wrong once they were mixed in with everything else (even reversing the polarity didn't work) and there's only so much distortion you can take, even with my made-up excuse of 'realism'.

So instead I turned (almost) everything else up with:
canopy_sounds_amp=450,90,375;15,15,100;120,80,100;10,10,100;240,10,100;20,20,100;180,20,100;180,10,100; # canopy sounds amplifier controller
(and turned main volume down, other games up)

Where there's a will, there's an Or.

Did somebody try it at home?

Most of the downloads were for the first batch, so either not many were impressed with the first attempt or their problems were completely fixed and they saw little need to download the final 'all_pcm' set.

I know which one I *want* to believe