function syncPlaylist() {
    /*
    Gets all of the song buffered progress bars.
    */
    var songBufferedProgressBarsPlaylist = document.querySelectorAll('.amplitude-buffered-progress[data-amplitude-playlist="' + _config2.default.active_playlist + '"]');

    /*
    Iterate over all of the song buffered progress bar and
    set them to 0 which is like re-setting them.
    */
    for (var i = 0; i < songBufferedProgressBarsPlaylist.length; i++) {
      var song = songBufferedProgressBarsPlaylist[i].getAttribute("data-amplitude-song-index");

      if (song == null && !isNaN(_config2.default.buffered)) {
        songBufferedProgressBarsPlaylist[i].value = parseFloat(parseFloat(_config2.default.buffered) / 100);
      }
    }
  }
Sync the playlist song buffered progress elements.