 must enqueue sound buffers with the sound device:&nbsp; For recording you enqueue empty buffers that are filled with data and delivered back to your application, for playback you enqueue buffers filled with the data that you want to play.&nbsp; These tasks are performed through methods defined by the respective subclasses.&nbsp; The thing to keep in mind is that you must deliver these buffers constantly and steadily while the stream is running.&nbsp; This is the essential programming difference between usi