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

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

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

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