New Post: WaveOut callback with existing window bug

I am currently working on my own implementation of the waveout api because i want to understand how naudio works and so on... :)

So I've reached a point now where everything with waveout works really fine. But I have a little problem that I can't fix. So I had a look on the naudio source. The source naudio is very different (may a bit better) but there is also the same problem. So I've written a little example where the bug occours.
The Problem ist you can't dispose and create a new WaveOut device in a small time.

Try out this code:

WaveOut waveOut;
        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofn = new OpenFileDialog();
            ofn.ShowDialog();
            if (waveOut != null)
            {
                waveOut.Stop();
                waveOut.Dispose();
            }

            waveOut = new WaveOut(this.Handle);
            Mp3FileReader reader = new Mp3FileReader(ofn.FileName);
            waveOut.Init(reader);
            waveOut.Play();
        }

If you try out this code you will get a object is null exception. I fixed that but after that there will be other problems like you are opening a new waveout while closing the old one...

So is there a way to fix that problem. I had a look on that for now more than 2 hours but I found no solution.

btw. it is very very interesting what is behind this greate libary.^^