public void smartPixTextColumnData(TreeViewColumn tree_column, CellRenderer cell, TreeModel tree_model, TreeIter iter) {
        GLib.Object o = null;
        string title = "";
        tree_model.get(iter, 0, out o, 2, out title);

        if(cell is CellRendererText) {
            string text;
            tree_model.get(iter, 2, out text);
            ((CellRendererText)cell).text = text;
        }
        else if(cell is CellRendererPixbuf && title == "Song Info") {
        stdout.printf("song info\n");
            ((CellRendererPixbuf)cell).pixbuf = get_pixbuf_from_stock("info", IconSize.MENU);
        }
        else if(cell is CellRendererPixbuf && title == "Collection") {
            stdout.printf("collection\n");
            ((CellRendererPixbuf)cell).pixbuf = get_pixbuf_from_stock("media-audio", IconSize.MENU);
        }
        else if(cell is CellRendererPixbuf && title == "Queue") {
            stdout.printf("queue\n");
            ((CellRendererPixbuf)cell).pixbuf = get_pixbuf_from_stock("media-audio", IconSize.MENU);
        }
        else if(cell is CellRendererPixbuf && title == "Already Played") {
            stdout.printf("already played\n");
            ((CellRendererPixbuf)cell).pixbuf = get_pixbuf_from_stock("playlist-automatic", IconSize.MENU);
        }
        else if(cell is CellRendererPixbuf && o is SmartPlaylist) {
            stdout.printf("smart playlist\n");
            ((CellRendererPixbuf)cell).pixbuf = get_pixbuf_from_stock("playlist-automatic", IconSize.MENU);
        }
        else if(cell is CellRendererPixbuf && o is Playlist) {
            stdout.printf("playlist\n");
            ((CellRendererPixbuf)cell).pixbuf = get_pixbuf_from_stock("playlist", IconSize.MENU);
        }
    }

    Gdk.Pixbuf get_pixbuf_from_stock (string stock_id, Gtk.IconSize size)
    {
      Gdk.Pixbuf pixbuf;

      pixbuf = this.render_icon(stock_id, size, null);

      if(pixbuf == null)
        stdout.printf("null\n");

      return pixbuf;
    }