I am new, so Hello, and I am trying to solve this on my own, but I need to reach out. I have searched multiple threads and cannot figure out how or what to upload mp3 files to. I have only the 4 factory sounds on the Aeon Doorbell but would like to hear say “Car in Driveway” or “Back Door is Open”. Where can I look for more detailed freshman type instructions. I have added your handler successfully. Thank you.