rem: if (volume < 0) volume = 0; else if (volume > 100) volume = 100;  if(gtk_xine_can_set_volume (gtx) == TRUE)
add: if (gtk_xine_can_set_volume (gtx) == TRUE)
context: gtk_xine_set_volume (GtkXine *gtx, gint volume){	g_return_if_fail (gtx != NULL);	g_return_if_fail (GTK_IS_XINE (gtx));	g_return_if_fail (gtx->priv->xine != NULL);	if (volume < 0)		volume = 0;	else if (volume > 100)		volume = 100;	if(gtk_xine_can_set_volume (gtx) == TRUE)	{		xine_set_audio_property (gtx->priv->xine,				gtx->priv->mixer, volume);	}}