I only have a very old cut-down version (cubasis audio lite), but with mine you have to record an audio sound to a .wav file (nothing to do with cubase in my version), and then you get cubase to play that particular .wav file (or any other) back by adding an event in one of the tracks, more like 'samples' in todays pop music. I think perhaps this could be related to why you are having problems, and perhaps cubase doesn't do quite what you think it can, but as I said, my version is old, and things change quickly. I'm disappearing for a weeks holiday now, so repost again Monday week if you are still stuck, and no one else has any suggestions.