Streaming Audio from Virtual Machine

[Gus Zernial <gus_zernial@yahoo.com>]

I'm using Kubuntu 9.10 32-bit on a quad-core Phenom II with 
Gigabit ethernet. I want to stream audio from MLB.com from a 
WinXP client thru a Linksys WMB54G wireless music bridge. Note 
that there are drivers for the WMB54G only for WinXP and Vista.

If I stream the audio thru a native WinXP box thru the WMB54G,
all is well and the audio sounds fine. When I try to stream thru a 
WinXP virtual machine on Kubuntu 9.10, the audio is poor quality
and subject to gaps and dropping the stream altogether. So far
I've tried KVM/QEMU and VirtualBox, same result.

Regards KVM/QEMU, I note AMD-V is activated in the BIOS, and I have a 
custom 2.6.32.7 kernel, and QEMU 0.11.0. The kvm kvm_amd modules are compiled in and loaded. I've been using bridged networking ..... I think it's set up correctly but I confess I'm no networking expert. My start command for the WinXP virtual machine is:

sudo /usr/bin/qemu -m 1024 -boot c -netnic,vlan=0,macaddr=00:d0:13:b0:2d:32,model=rtl8139 -net tap,vlan=0,ifname=tap0,script=/etc/qemu-ifup -localtime -soundhw ac97 -smp 4 -fda /dev/fd0 -vga std -usb /home/rbroman/windows.img

I also tried model=virtio but that didn't help. 

I suspect this is a virtual machine networking problem but I'm
not sure. So my questions are:

-What's the best/fastest networking option and how do I set it up?
Pointers to step-by-step instructions appreciated.

-Is it possible I have a problem other than networking? Configuration
problem with KVM/QEMU? Or could there be a problem with the WMB54G driver when used thru a virtual machine?

-Is there a better virtual machine solution than KVM/QEMU for what 
I'm trying to do?

Recommendations appreciated - Gus