Created Unassigned: WaveFormatConversionStream class attempting to reference a null pointer... [16430]

Greetings all,

I am using 1.7 to play around with WaveOut Audio using the Event callback mechanism.

Whenever I exit out of the demo while audio is playing the Visual Studio is raising an unhandled exception error. When I look further into it I have found that the WaveFormatConversionStream class is attempting to access either "sourceStream" or "conversionStream" and both of these members are null. I think it has to do with closing the demo window (using the red "X" in the upper right corner) while audio is playing because if I stop the audio first (click on the square block) then there are no exceptions raised. I am going to guess that these exceptions go unnoticed if you are not running under Visual Studio.

To reproduce:

1. Load the NAudio.sln in VS2010.
2. Set the NAudioDemo project as the Startup Project.
3. Be building and running in "Debug" mode.
4. Hit "F5" to kick things off.
5. Select "Audio File Playback" and press Load.
6. Select "Event" "Callback Mechanism:" and start playing a .wav file.
7. Click on the red "X" in the upper right hand corner to close NAudio Demo.