rem: gtk_tree_view_set_reorderable (GTK_TREE_VIEW (treeview), TRUE);
add: totem_playlist_set_reorderable ((TotemPlaylist *) data, TRUE);
context: button_press_cb (GtkWidget *treeview, GdkEventButton *event, gpointer data){ 		gtk_drag_dest_unset (treeview);	g_signal_handlers_block_by_func (treeview, (GFunc) drop_cb, data);	gtk_tree_view_set_reorderable (GTK_TREE_VIEW (treeview), TRUE);		return FALSE;}