It's interesting to see this being worked on.
Not wanting to break into the discussion, but desiring to leave a few lines here:
It would be interesting if a comparison was ever to be made between those builds (from GadgetUK) and Mednafen, which features another tweaked version of 0.95.
http://mednafen.sourceforge.net/ -- also interesting is the changelog, featuring several "Lynx" mentions, such as audio-rendering betterments: http://mednafen.sour...n/09x/ChangeLog
Probably though I am not bringing anything new to your ears. In this case, just waving hands to you. Interesting also about Wine, wondering if XP VirtualBox would also be suffering from the mentioned issue.
EDIT: Well, I have tested it as I had that handy -- 0.971 works well from under VirtualBox (Ubuntu host). Audio rendering indeed is much improved, at least comparing with 0.95. I am impressed. ::