http://bugs.winehq.org/show_bug.cgi?id=36506
--- Comment #7 from Lam winehq@lam.pl --- I confirm the work-around resolves the crash (actually I've copied that old patch, doing an if(wglGetCurrentContext() == NULL) at function entry :))
It was kind of hard to install and make it recognize the 64-bit XAudio2, thanks for the hint in the other thread.