Also - any quick tips for setting up your comms system for playing music.
I received this from a techie at Honeywell:
For a KMA 24H -70 and -71:
If the output impedance of the CD/Tape/MP3 device is high enough (500 ohms) then it could be
connected to one of the unused audio inputs. Pin 14 is an unswitched input and pin 10 is an
unswitched/unmuted input.The KMA 24H does not have a dedicated entertainment/music input.
The Tx Key will mute all audio except transmit sidetone and altimeter warning from the headphone
output and all audio except altimeter warning from the speaker output.