seek(per) {
      if (!this.currentHowl) return;

      // Get the Howl we want to manipulate.
      const audio = this.currentHowl;

      // Convert the percent into a seek position.
      // if (audio.playing()) {
      // }
      audio.seek(audio.duration() * per);
    }
Seek to a new position in the currently playing track.
@param  {Number} per Percentage through the song to skip.