diff -Naur xulrunner-1.9.2.ebuild.old xulrunner-1.9.2.ebuild
--- xulrunner-1.9.2.ebuild.old	2010-01-22 15:06:37.000000000 +0100
+++ xulrunner-1.9.2.ebuild	2010-01-27 13:13:58.000000000 +0100
@@ -20,7 +20,7 @@
 KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~ppc ~ppc64 ~sparc ~x86"
 SLOT="1.9"
 LICENSE="|| ( MPL-1.1 GPL-2 LGPL-2.1 )"
-IUSE="+alsa debug libnotify +networkmanager"
+IUSE="+alsa oss debug libnotify +networkmanager"
 
 RDEPEND="java? ( >=virtual/jre-1.4 )
 	>=dev-lang/python-2.3[threads]
@@ -67,6 +67,19 @@
 	sed -i -e "s:@PV@:${MAJ_PV}:" "${S}"/config/autoconf.mk.in \
 		|| die "${MAJ_PV} sed failed!"
 
+	# Disable ALSA and enable OSS (Arch)
+	if use oss ; then
+		sed -i -e "s/sydney_audio_alsa/sydney_audio_oss/" \
+		"${S}"/media/libsydneyaudio/src/Makefile.in || die "sed OSS failed"
+	#Remove the ALSA bits form the build system
+		sed -i -e "/alsa\//d" "${S}"/config/system-headers || die "ALSA clean failed"
+		sed -i -e "/alsa\//d" "${S}"/js/src/config/system-headers || die "ALSA clean failed"
+		sed -i -e "/LIB(asound/d" "${S}"/configure.in || die "ALSA clean failed"
+		if use alsa ; then
+		die "ALSA support is removed with the oss use flag"
+		fi
+	fi
+
 	# Enable gnomebreakpad
 	if use debug ; then
 		sed -i -e "s:GNOME_DISABLE_CRASH_DIALOG=1:GNOME_DISABLE_CRASH_DIALOG=0:g" \
@@ -131,11 +144,22 @@
 	mozconfig_annotate '' --enable-system-lcms
 	mozconfig_annotate '' --with-system-bz2
 
+	
+	# Enable audio if ALSA or OSS is enabled
+	if use alsa ; then
+		mozconfig_annotate 'ALSA' --enable-wave
+		mozconfig_annotate 'ALSA' --enable-ogg
+	elif use oss ; then
+		mozconfig_annotate 'OSS' --enable-wave
+		mozconfig_annotate 'OSS' --enable-ogg
+	else
+		mozconfig_annotate 'nosound' --disable-wave
+		mozconfig_annotate 'nosound' --disable-ogg
+	fi
+
 	mozconfig_use_enable libnotify
 	mozconfig_use_enable java javaxpcom
 	mozconfig_use_enable networkmanager necko-wifi
-	mozconfig_use_enable alsa ogg
-	mozconfig_use_enable alsa wave
 
 	# Debug
 	if use debug ; then