try:
            channel[CHANNEL_TYPE_STREAMED_MEDIA].RequestStreams(
                self.handle,
                [MEDIA_STREAM_TYPE_AUDIO, MEDIA_STREAM_TYPE_VIDEO]);
        except dbus.DBusException, e:
            print "failed:", e
            print "requesting audio stream"

            try:
                channel[CHANNEL_TYPE_STREAMED_MEDIA].RequestStreams(
                    self.handle, [MEDIA_STREAM_TYPE_AUDIO]);
            except dbus.DBusException, e:
                print "failed:", e
                print "giving up"
                self.quit()