Documentation on most things KolibriOS is hard to find (the forum seems the most helpful), and often non-existent, but after following the suggestion by hidnplayr
to check out AC97snd, I got stuck into a web search. Regrettably most of the pages returned were in Russian, and google translate does not do a very good job. But I did find a few interesting pages about sound in KolibriOS.
At first I found a page that talked about different audio applications... http://developers-club.com/posts/251371/
This page mentions (in the 'minuses') of AC97snd... it "often" crashing. Is this true?
This page then talked about an application called "Pixie".
I then tried to find out some more information about "Pixie", and came across this page... https://translate.google.com.au/transla ... rev=search
It would appear than rather than trying to port either MPXplay or MPR, 'Pixie' is what could/should be used as a base (or starting point) for developing an interface to an audio engine. I agree with hidnplayr
that using a driver/codec already written is the way to go, and just make/modify/enhance a suitable user interface.
Although the 'Pixie' thread is a little old, I'll try contacting the 'Pixie' author using that thread. I am still interested in contributing financially to such a project.
As always, the communities (your) comments are very welcome.