diff -ur xen-4.0.0/tools/ioemu-qemu-xen/xen-setup xen-4.0.0.alsa/tools/ioemu-qemu-xen/xen-setup
--- xen-4.0.0/tools/ioemu-qemu-xen/xen-setup	2010-03-24 18:16:51.000000000 +0100
+++ xen-4.0.0.alsa/tools/ioemu-qemu-xen/xen-setup	2010-04-09 16:13:21.006256114 +0200
@@ -16,8 +16,8 @@
 if test -z "${XEN_SCRIPT_DIR}"; then
 	XEN_SCRIPT_DIR="/etc/xen/scripts"
 fi

-./configure --disable-gfx-check --disable-curses --disable-slirp "$@" --prefix=${PREFIX}
+./configure --audio-drv-list=alsa --enable-mixemu --disable-gfx-check --disable-curses --disable-slirp "$@" --prefix=${PREFIX}

 if [ "x$XEN_ROOT" != x ]; then
 	echo "XEN_ROOT=$XEN_ROOT" >>config-host.mak