RetroFit Ring Chirps

I just installed the retrofit ring device, and it works great. It has replaced my old alarm. The only question is on the chirps. I have it setup to play chirps when a door is open because that is what our old alarm did, but I would like to change the sound of the chirp, but I can't find out how to do it. I am not sure it can be changed if you are only using the retrofit. Please let me know if it can be done and how. All the other help I have gotten shows how to do it from contact sensor.