I tried to use this:

private void CreateDevice()
{
    _playbackDevice = new WaveOut();
    _playbackDevice.PlaybackStopped += PlaybackDevicePlaybackStopped;
}

void PlaybackDevicePlaybackStopped(object sender, EventArgs e)
{
    if (OnPlaybackStopped != null)
    {
        OnPlaybackStopped(this, e);
    }
}

But it never invoked.

Then I tried to use the PlaybackState:

public PlaybackState PlaybackState
{
    get
    {
        if (_playbackDevice == null)
            return default(PlaybackState);

        return _playbackDevice.PlaybackState;
    }
}

But when the song ends it does not change to "stopped". But when I call Stopped it changes correctly.

Can someone help me?