http://bugs.winehq.org/show_bug.cgi?id=20799
--- Comment #91 from Raymond superquad.vortex2@gmail.com 2010-06-24 00:22:22 --- (In reply to comment #63)
and I don't believe ALSA supports the controls necessary for handling the DSound API properly (it certainly doesn't expose any EAX controls).
If you look at the source code of trident driver, it seem has most of the feature of DSound, (e.g pan . reverb, chrous controls )
http://git.alsa-project.org/?p=alsa-kernel.git;a=blob;f=sound/pci/trident/tr...
I don't have this card, so does not know whether the features are necessary for handling DSound API, don't expect it can support EAX control since this is vendor specific