http://bugs.winehq.org/show_bug.cgi?id=19523
--- Comment #11 from Ken Thomases ken@codeweavers.com 2010-12-08 08:30:30 CST --- This bug was originally opened against the internal design of Wine's audio subsystem. I was mistaken about it. I had believed it was not capable of supporting audio drivers which allow opening a single device multiple times simultaneously. However, Wine's internals do support that.
I have since taken advantage of Wine's support for that to enable multiple opens in the Core Audio driver.
If there are problems on platforms other than Mac OS X, it's not with Wine's audio subsystem design, it is with individual audio drivers, such as winealsa.drv. Therefore, it would be the subject of a different bug.