https://bugs.winehq.org/show_bug.cgi?id=39471
--- Comment #7 from Andrew Eikum aeikum@codeweavers.com --- Thanks for the nice bug report! Can you check what version of openal you are using? There is a known bug in openal-1.15 that Wine triggers.
Also, can you please attach a log with the channels from http://wiki.winehq.org/Sound? Thanks!