public void PlayCrossFade(int trackindex, TimeSpan duration, bool LoopTrack)
{
if (currentClip == null)
{
Play(trackindex, LoopTrack);
}
else
{
currentClip.FadeOut(duration);
currentClip = clips[trackindex];
currentClip.Stop();
currentClip.PlayFadeIn(Volume, duration, LoopTrack);
}
}