Why has the MP3 melody that I assigned to a specific push button changed on my DC917xx MP3 Doorbell?

If you have associated your push button to a downloaded melody and you subsequently delete that melody, by default the push button will play the next available downloaded melody, if any are present, or it will default to one of the standard melodies available on the DC917xx MP3 Doorbell.

If you have more than one push button, deleting an MP3 melody that is associated to a specific push button will affect the other push buttons in the system. To change the melody associated with each push button, press the specific push button, then press the melody button melody on the doorbell until you hear your desired melody.