public static void Crossfade(AudioClip newTrack)
{
Instance.StopAllCoroutines();
if (Instance.GetComponents <AudioSource>().Length > 1)
{
Destroy(Instance.GetComponent <AudioSource>());
}
AudioSource newAudioSource = Instance.gameObject.AddComponent <AudioSource>();
newAudioSource.volume = 0.0f;
newAudioSource.clip = newTrack;
newAudioSource.Play();
Instance.StartCoroutine(Instance.ActuallyCrossfade(newAudioSource, 1.0f));
}