function syncSong(seconds) {
    if (_config2.default.active_playlist == null) {
      var durationSecondSelectors = document.querySelectorAll('.amplitude-duration-seconds[data-amplitude-song-index="' + _config2.default.active_index + '"]');

      for (var i = 0; i < durationSecondSelectors.length; i++) {
        var playlist = durationSecondSelectors[i].getAttribute("data--amplitude-playlist");

        if (playlist == null) {
          durationSecondSelectors[i].innerHTML = seconds;
        }
      }
    }
  }
Syncs the song duration seconds.

@param {Integer} seconds - The duration seconds for the audio.