Just was playing with some scripting for fun. Not very practical and there are many problems, but thought I would share, maybe someone can do something more creative. 

Video

CODE

Rpt.conf

[events]

/etc/asterisk/scripts/kerchunk.sh = s|t|RPT_RXKEYED

/etc/asterisk/scripts/unkey.sh = s|f|RPT_RXKEYED

Kerchunk.sh

#!/bin/bash

touch /etc/asterisk/scripts/keyed

sleep 1.3

if [ ! -f /etc/asterisk/scripts/keyed ]; then

   echo "File $FILE exists."

   asterisk -rx "rpt localplay 45499 /etc/asterisk/sounds/kerchunk"

fi

exit 0

unkey.sh

#!/bin/bash

rm /etc/asterisk/scripts/keyed