--- /usr/portage/media-sound/teamspeak-client-bin/teamspeak-client-bin-3.0.11.1.ebuild	2013-08-07 22:25:49.000000000 +0200
+++ teamspeak-client-bin-3.0.11.1-r99.ebuild	2013-09-07 12:06:28.871614112 +0200
@@ -13,6 +13,8 @@ SLOT="0"
 KEYWORDS="~amd64 ~x86"
 RESTRICT="fetch mirror strip"
 
+IUSE="alsa pulseaudio"
+
 SRC_URI="amd64? ( http://ftp.4players.de/pub/hosted/ts3/releases/${PV}/TeamSpeak3-Client-linux_amd64-${PV/_/-}.run )
 	x86? ( http://ftp.4players.de/pub/hosted/ts3/releases/${PV}/TeamSpeak3-Client-linux_x86-${PV/_/-}.run )"
 
@@ -20,7 +22,12 @@ RDEPEND="dev-qt/qtcore:4
 	dev-qt/qtgui:4[accessibility,xinerama]
 	dev-qt/qtsql:4
 	sys-libs/glibc
-	sys-libs/zlib"
+	sys-libs/zlib
+
+	alsa? ( media-libs/alsa-lib )
+	pulseaudio? ( media-sound/pulseaudio )"
+
+REQUIRED_USE="|| ( alsa pulseaudio )"
 
 S="${WORKDIR}"
 
@@ -38,6 +45,10 @@ src_prepare() {
 	# Remove the qt-libraries as they just cause trouble with the system's Qt, see bug #328807.
 	rm libQt* || die "Couldn't remove bundled Qt libraries."
 
+	# remove unwanted soundbackends
+	if ! use alsa ; then rm soundbackends/libalsa* ; fi
+	if ! use pulseaudio ; then rm soundbackends/libpulseaudio* ; fi
+
 	# Rename the tsclient to its shorter version, required by the teamspeak3 script we install.
 	mv ts3client_linux_* ts3client || die "Couldn't rename ts3client to its shorter version."
 }