function runNextKeyDownEvent() {
    /*
      Check to see if the current state of the player
      is in playlist mode or not playlist mode.
    */
    if (_config2.default.active_playlist == "" || _config2.default.active_playlist == null) {
      _audioNavigation2.default.setNext();
    } else {
      _audioNavigation2.default.setNextPlaylist(_config2.default.active_playlist);
    }
  }
Runs the next method for key down.