Todd,
It is likely that your chime board has been zapped with an electrical surge causing it to default into the mute mode. The mute mode is designed to turn down your radio when the doorbell rings so that you can hear it. If the mute mode is always on, then your radio will be very quiet--even when noone is pressing the door bell.
The good news is that it is an easy fix: If you can forgoe having a door bell, simply remove the master panel and disconnet the 4-band wire from the system. The radio/music will return to its normal volume and you will have no doorbell.
You can check for vendors in your area to acquire and replace the chime board. Once received and installed, your system should work like new.
Good luck.
Also, if you happen to have already upgraded this sytem, please let me know, I would be interested in acquiring your old 3003 master station for parts. I need several.
Thanks again.
Adam