public void timer_Tick(object sender, EventArgs e)
{
double ms = stream.GetMs(output);
trackBar1.Value = (int)(ms / granularity);
if (trackBar1.Value >= trackBar3.Value)
{
output.Stop();
}
if (output.PlaybackState == PlaybackState.Stopped)
{
timer.Stop();
}
textBox3.Text = TimeSpan.FromMilliseconds(ms).ToShortForm();
}