private void MainWindow_Loaded(object sender, RoutedEventArgs e)
{
pw = new PlayWindow();
pw.Show();
pw.ConnectTimeLine(tl);
pw.ConnectPreview(preview);
tl.FrameRate = FrameRate._60PFS;
tl.AddTrack(SourceType.Sound, 1);
tl.AddTrack(SourceType.Video, 1);
tl.AddTrack(SourceType.Video, 2);
tl.AddTrack(SourceType.Video, 3);
tl.AddTrack(SourceType.Light, 1);
tl.AddTrack(SourceType.Light, 2);
tl.AddTrack(SourceType.Light, 3);
tl.AddTrack(SourceType.Light, 4);
tl.AddTrack(SourceType.Image, 1);
}