I've downloaded and implemented your WaveFile (and associated classes). I have an event which, when it occurs, should kick-off an endless playback loop which ends only when the user acknowledges it by hitting the space bar. Invariably, a NullReference exception is thrown during the first or second loop of the file, killing the playback and the application. Has anyone else seen this? Is there a fix?

Can you post a full stack trace of the NullReferenceException you're getting?