http://bugs.winehq.org/show_bug.cgi?id=24489
--- Comment #4 from Austin English austinenglish@gmail.com 2010-09-21 20:20:59 CDT --- (In reply to comment #3)
I saw, but I thought I'd report it anyway since I couldn't find another one pertaining to discs on OS X. Many applications require discs for installing and other things, so it seemed important to me.
Sure, it's still a bug, but I'm saying that it may be an OS X specific bug. If you can test it under Linux, that would help identify where the issue is.
If that is the cause, you'd want to look at http://source.winehq.org/git/wine.git/?a=blob;f=dlls/ntdll/cdrom.c#l570
and add OSX specific code.