Index: audio/Makefile
===================================================================
--- audio/Makefile
+++ audio/Makefile
@@ -832,6 +832,7 @@
     SUBDIR += virtual_oss
     SUBDIR += virtual_oss_ctl
     SUBDIR += virtual_oss_equalizer
+    SUBDIR += virtual_oss_libav
     SUBDIR += virtual_oss_sndio
     SUBDIR += visp-go
     SUBDIR += vitunes
Index: audio/virtual_oss_libav/Makefile
===================================================================
--- /dev/null
+++ audio/virtual_oss_libav/Makefile
@@ -0,0 +1,37 @@
+PORTNAME=	virtual_oss_libav
+DISTVERSION=	${OSVERSION}
+CATEGORIES=	audio
+DISTFILES=
+
+MAINTAINER=	christos@FreeBSD.org
+COMMENT=	Virtual OSS libav support for the bluetooth backend
+WWW=		https://freebsd.org
+
+LICENSE=	BSD2CLAUSE
+
+LIB_DEPENDS=	libavdevice.so:multimedia/gstreamer1-libav \
+		libavutil.so:multimedia/gstreamer1-libav \
+		libavcodec.so:multimedia/gstreamer1-libav \
+		libavformat.so:multimedia/gstreamer1-libav
+
+USES=		pathfix uidfix
+USE_LDCONFIG=	yes
+
+MAKE_ENV+=	LIBDIR=${PREFIX}/lib \
+		MAKEOBJDIRPREFIX=${WRKDIR} \
+		HAVE_LIBAV=YES
+
+WRKSRC=		${SRC_BASE}/lib/virtual_oss/bt
+
+PLIST_FILES=	lib/virtual_oss/voss_bt.so
+
+pre-install:
+	${MKDIR} ${STAGEDIR}${LOCALBASE}/lib/virtual_oss
+
+.include <bsd.port.pre.mk>
+
+.if !exists(${WRKSRC})
+IGNORE=		requires FreeBSD source files in ${SRC_BASE}
+.endif
+
+.include <bsd.port.post.mk>
Index: audio/virtual_oss_libav/pkg-descr
===================================================================
--- /dev/null
+++ audio/virtual_oss_libav/pkg-descr
@@ -0,0 +1,4 @@
+libav support for Virtual OSS' blueooth backend.
+
+This is an extension for the base system version of Virtual OSS. It rebuilds
+the bluetooth backend with libav support, which is needed for AAC audio.