https://bugs.winehq.org/show_bug.cgi?id=40203
--- Comment #4 from Andrew Eikum aeikum@codeweavers.com --- I'm using the Reaper v5.1 demo and WASAPI works with winepulse for me. Is upgrading an option? If not, can you upload a log with the channels from http://wiki.winehq.org/Sound?