https://bugs.winehq.org/show_bug.cgi?id=26965
--- Comment #5 from Andrew Eikum aeikum@codeweavers.com --- I expect this is fixed in different ways by either of these commits:
commit 4fbe6f3e7601f7b39f7f672ffe43553eee92ab1b Author: Andrew Eikum aeikum@codeweavers.com Date: Thu May 19 09:11:08 2016 -0500
dsound: Allow inactive devices to change the primary format.
commit 88dd3b4f6e4ed10413b8d93055801a6e60fbc5e8 Author: Andrew Eikum aeikum@codeweavers.com Date: Thu May 19 09:11:13 2016 -0500
dsound: Support downmixing 5.1 to stereo.