As long as sound is working in DomU qemu can emulate and passthrough sound.
I had to set my configuration file as
"soundhw=''es1370''" for my Windows to
recognize it and the sound to get through dom0.
Max Baro 
Technical Support Supervisor 
FACTS Services, Inc. 
(305) 284 - 7440 
meb@factsservices.com 
-----Original Message-----
Date: Wed, 10 Sep 2008 08:35:10 -0700
From: Mike Power <mpower@alumni.calpoly.edu>
Subject: [Xen-users] pci pass through of sound cards
To: xen-users@lists.xensource.com
Message-ID: <48C7E92E.1070902@alumni.calpoly.edu>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
In my browsing of pci pass through I have found a lot of information but 
some of that information seems to be obsolete applying to older versions 
of Xen.  I have also read that some hardware can not be passed through. 
I have a windows domU and I was considering what it would take to get 
sound out of it.  I figured I had two choices.  One, some how get sound 
out of the windows through some drivers and into the dom0 sound card, 
not likely I would guess.  Two, buy a cheap sound card and pass it 
through to the windows domU.  I could then run the outputs of one sound 
card into the inputs of the other. 
Any chance I can get some up to date information on pci pass through for 
sound cards.  I would rather not buy unless I knew it was possible.
Mike Power
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