https://bugs.winehq.org/show_bug.cgi?id=38548
--- Comment #1 from Andrew Eikum aeikum@codeweavers.com --- The game respects our DSCAPS structure's claim to only support one HW static/streaming buffer. The Sound buffer takes up that one slot, so no voice buffer is created.
I've sent a patch to bump up our claimed number of buffers, which fixes this bug.