static public void TransitionToScene(string scene, float duration, FadeColor fadeColor, AudioSourceExtended[] audio, SceneTransitionCallback callback = null)
 {
     TransitionToScene(scene, duration, fadeColor, callback);
     AudioUtils.FadeOutAudio(audio, duration);
 }
 static public void TransitionToScene(string scene, AudioSourceExtended[] audio, SceneTransitionCallback callback = null)
 {
     TransitionToScene(scene, DEFAULT_DURATION, FadeColor.Black, callback);
     AudioUtils.FadeOutAudio(audio, DEFAULT_DURATION);
 }