https://bugs.winehq.org/show_bug.cgi?id=40203
--- Comment #2 from Engys engys@lumalab.net --- I missed to say why it is needed to have WASAPI. WASAPI is the only low latency audio option that works out of the box with Reaper on top of Wine. Every other option need a closed source portion to bring a professional audio setup like this to work.