http://bugs.winehq.org/show_bug.cgi?id=28413
--- Comment #42 from Jörg Höhle hoehle@users.sourceforge.net 2013-01-18 09:18:10 CST --- That quote scheds interesting light, yet it is about MIDI http://web.tiscalinet.it/giordy/midi-tech/share.htm "There is one thing that I've noticed about some drivers. They allow an application to quickly return from a call to midiOutClose() or midiInClose(), but the driver then goes on to do some "cleanup" in the background. The driver may not yet be ready to allow someone else to do a midiInOpen() or midiOutOpen()[corr.] during that time, and may return a "Device is busy" error."