private void selectAudio() {
   final LibraryExplorer explorer = LibraryMediator.instance().getLibraryExplorer();
   explorer.enqueueRunnable(
       new Runnable() {
         @Override
         public void run() {
           explorer.selectAudio();
         }
       });
   explorer.executePendingRunnables();
 }
  /**
   * Handles the selection rows in the library window, enabling or disabling buttons and chat menu
   * items depending on the values in the selected rows.
   *
   * @param row the index of the first row that is selected
   */
  public void handleSelection(int row) {
    int[] sel = TABLE.getSelectedRows();
    if (sel.length == 0) {
      handleNoSelection();
      return;
    }

    File selectedFile = getFile(sel[0]);

    //  always turn on Launch, Delete, Magnet Lookup, Bitzi Lookup
    LAUNCH_ACTION.setEnabled(true);
    LAUNCH_OS_ACTION.setEnabled(true);
    DELETE_ACTION.setEnabled(true);

    if (selectedFile != null && !selectedFile.getName().endsWith(".torrent")) {
      CREATE_TORRENT_ACTION.setEnabled(sel.length == 1);
    }

    if (selectedFile != null) {
      SEND_TO_FRIEND_ACTION.setEnabled(sel.length == 1);

      if (getMediaType().equals(MediaType.getAnyTypeMediaType())) {
        boolean atLeastOneIsPlayable = false;

        for (int i : sel) {
          File f = getFile(i);
          if (MediaPlayer.isPlayableFile(f) || hasExtension(f.getAbsolutePath(), "mp4")) {
            atLeastOneIsPlayable = true;
            break;
          }
        }

        SEND_TO_ITUNES_ACTION.setEnabled(atLeastOneIsPlayable);
      } else {
        SEND_TO_ITUNES_ACTION.setEnabled(
            getMediaType().equals(MediaType.getAudioMediaType())
                || hasExtension(selectedFile.getAbsolutePath(), "mp4"));
      }
    }

    if (sel.length == 1 && selectedFile.isFile() && selectedFile.getParentFile() != null) {
      OPEN_IN_FOLDER_ACTION.setEnabled(true);
    } else {
      OPEN_IN_FOLDER_ACTION.setEnabled(false);
    }

    if (sel.length == 1) {
      LibraryMediator.instance().getLibraryCoverArt().setFile(selectedFile);
    }

    //        boolean anyBeingShared = isAnyBeingShared();
    //        WIFI_SHARE_ACTION.setEnabled(!anyBeingShared);
    //        WIFI_UNSHARE_ACTION.setEnabled(!anyBeingShared);
  }
    @Override
    public void actionPerformed(ActionEvent e) {
      final short videoCount = (short) TABLE.getSelectedRows().length;

      // can't happen, but just in case.
      if (videoCount < 1) {
        return;
      }

      // get selected files before we switch to audio and loose the selection
      final List<File> selectedFiles = getSelectedFiles();

      selectAudio();

      String status = I18n.tr("Extracting audio from " + videoCount + " selected videos...");
      if (videoCount == 1) {
        status = I18n.tr("Extracting audio from selected video...");
      }
      LibraryMediator.instance().getLibrarySearch().pushStatus(status);

      SwingWorker<Void, Void> demuxWorker =
          new SwingWorker<Void, Void>() {

            @Override
            protected Void doInBackground() throws Exception {
              isDemuxing = true;
              demuxFiles(selectedFiles);
              isDemuxing = false;
              return null;
            }

            @Override
            protected void done() {
              int failed = videoCount - demuxedFiles.size();
              String failedStr = (failed > 0) ? " (" + failed + " " + I18n.tr("failed") + ")" : "";
              LibraryMediator.instance()
                  .getLibrarySearch()
                  .pushStatus(I18n.tr("Done extracting audio.") + failedStr);
            }
          };
      demuxWorker.execute();
    }
  /**
   * Override the default removal so we can actually stop sharing and delete the file. Deletes the
   * selected rows in the table. CAUTION: THIS WILL DELETE THE FILE FROM THE DISK.
   */
  public void removeSelection() {
    int[] rows = TABLE.getSelectedRows();
    if (rows.length == 0) return;

    if (TABLE.isEditing()) {
      TableCellEditor editor = TABLE.getCellEditor();
      editor.cancelCellEditing();
    }

    List<File> files = new ArrayList<File>(rows.length);

    // sort row indices and go backwards so list indices don't change when
    // removing the files from the model list
    Arrays.sort(rows);
    for (int i = rows.length - 1; i >= 0; i--) {
      File file = DATA_MODEL.getFile(rows[i]);
      files.add(file);
    }

    CheckBoxListPanel<File> listPanel =
        new CheckBoxListPanel<File>(files, new FileTextProvider(), true);
    listPanel.getList().setVisibleRowCount(4);

    // display list of files that should be deleted
    Object[] message =
        new Object[] {
          new MultiLineLabel(
              I18n.tr(
                  "Are you sure you want to delete the selected file(s), thus removing it from your computer?"),
              400),
          Box.createVerticalStrut(ButtonRow.BUTTON_SEP),
          listPanel,
          Box.createVerticalStrut(ButtonRow.BUTTON_SEP)
        };

    // get platform dependent options which are displayed as buttons in the dialog
    Object[] removeOptions = createRemoveOptions();

    int option =
        JOptionPane.showOptionDialog(
            MessageService.getParentComponent(),
            message,
            I18n.tr("Message"),
            JOptionPane.YES_NO_OPTION,
            JOptionPane.QUESTION_MESSAGE,
            null,
            removeOptions,
            removeOptions[0] /* default option */);

    if (option == removeOptions.length - 1 /* "cancel" option index */
        || option == JOptionPane.CLOSED_OPTION) {
      return;
    }

    // remove still selected files
    List<File> selected = listPanel.getSelectedElements();
    List<String> undeletedFileNames = new ArrayList<String>();

    boolean somethingWasRemoved = false;

    for (File file : selected) {
      // stop seeding if seeding
      BittorrentDownload dm = null;
      if ((dm = TorrentUtil.getDownloadManager(file)) != null) {
        dm.setDeleteDataWhenRemove(false);
        dm.setDeleteTorrentWhenRemove(false);
        BTDownloadMediator.instance().remove(dm);
      }

      // close media player if still playing
      if (MediaPlayer.instance().isThisBeingPlayed(file)) {
        MediaPlayer.instance().stop();
        MPlayerMediator.instance().showPlayerWindow(false);
      }

      // removeOptions > 2 => OS offers trash options
      boolean removed =
          FileUtils.delete(
              file, removeOptions.length > 2 && option == 0 /* "move to trash" option index */);
      if (removed) {
        somethingWasRemoved = true;
        DATA_MODEL.remove(DATA_MODEL.getRow(file));
      } else {
        undeletedFileNames.add(getCompleteFileName(file));
      }
    }

    clearSelection();

    if (somethingWasRemoved) {
      LibraryMediator.instance().getLibraryExplorer().refreshSelection(true);
    }

    if (undeletedFileNames.isEmpty()) {
      return;
    }

    // display list of files that could not be deleted
    message =
        new Object[] {
          new MultiLineLabel(
              I18n.tr(
                  "The following files could not be deleted. They may be in use by another application or are currently being downloaded to."),
              400),
          Box.createVerticalStrut(ButtonRow.BUTTON_SEP),
          new JScrollPane(createFileList(undeletedFileNames))
        };

    JOptionPane.showMessageDialog(
        MessageService.getParentComponent(), message, I18n.tr("Error"), JOptionPane.ERROR_MESSAGE);

    super.removeSelection();
  }