add: if (gtk_xine_is_playing (gtx) == FALSE) return;
context: gtk_xine_stop (GtkXine *gtx){	g_return_if_fail (gtx != NULL);	g_return_if_fail (GTK_IS_XINE (gtx));	g_return_if_fail (gtx->priv->xine != NULL);	if (gtx->priv->stream == NULL)		return;	xine_stop (gtx->priv->stream);}