function sync(durationTime) {
    var durationText = computeDurationText(durationTime);

    syncGlobal(durationText);
    syncPlaylist(durationText);
    syncSong(durationText);
    syncSongInPlaylist(durationText);
  }
Syncs the duration time for all elements.

@param {Object} durationTime - The object containing all of the song duration times.