add: D("init_columns");
context: init_columns (GtkTreeView *treeview){	GtkCellRenderer *renderer;	GtkTreeViewColumn *column;	GtkWidget *header;	char *filename;	/* Playing pix */	renderer = gtk_cell_renderer_pixbuf_new ();	filename = gnome_program_locate_file (NULL,			GNOME_FILE_DOMAIN_APP_DATADIR,			"playlist-16.png", TRUE, NULL);	header = gtk_image_new_from_file (filename);	g_free (filename);	gtk_widget_show (header);	column = gtk_tree_view_column_new_with_attributes (_("Playing"),			renderer,			"pixbuf", PIX_COL,			NULL);	gtk_tree_view_column_set_fixed_width (column, 20);	gtk_tree_view_column_set_widget (column, header);	gtk_tree_view_append_column (treeview, column);	/* Display Name */	renderer = gtk_cell_renderer_text_new ();	column = gtk_tree_view_column_new_with_attributes (_("Filename"),			renderer,			"text", FILENAME_COL,			NULL);	gtk_tree_view_append_column (treeview, column);}