/// <summary>
/// Initiates a crossfade of two sound types that are IFadeable.
/// </summary>
/// <param name="faceOutTrack">Sound that will fade-out.</param>
/// <param name="fadeInTrack">Sound that will fade-in.</param>
/// <param name="fadeSettings">ChangeAlphaValue type containing the fade curves.</param>
private void CrossFade(IFadeable faceOutTrack, IFadeable fadeInTrack, Fade fadeSettings)
{
faceOutTrack.BeginFade(fadeSettings.FadeOutCurve, true);
fadeInTrack.BeginFade(fadeSettings.FadeInCurve, false);
}
