http://bugs.winehq.org/show_bug.cgi?id=24153
--- Comment #7 from Jan Boysen jan@lugfl.de 2011-07-31 04:34:57 CDT --- I can confirm, this is fixed.
Even the render speed of the entire GUI increased massively, so Audition finally is full usable as its the first time the time correctly is displayed.
Thanks Vincent, for all the work on it..