item = tableMenu.add("Add Files");
item.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
TreeFileChooser fc = new TreeFileChooser(PlaylistTable.this, "Add Files", true);
File[] files = fc.showOpenDialog();
if (files != null) {
ProgressDialog dialog = new ProgressDialog(PlaylistTable.this, "Adding Files");
dialog.show(new Task.FileAddingTask(getPlaylist(), files, getPlaylist().size()));
}