https://bugs.winehq.org/show_bug.cgi?id=34522
--- Comment #13 from super_man@post.com --- Well I looked into wine source code and for example
function IPersistStreamImpl_Load is totally unimplemented, it just prints not implemented yet line. But it feels also that wine duplicates lots of this directmusic code. On other places you could see IPersistStreamImpl_Load implemented, I don't know if copying that function to other files would help. Also I spotted few functions that returned E_FAIL by default when they should be S_OK.
wine 1.9.6