Here's how to get the RPi to route the audio upon pairing with a sound source: 1. create a file if it doesn't exist: /etc/udev/rules.d/99-input.rules SUBSYSTEM="input", GROUP="input", MODE="0660" KERNEL=="input[0-9]*", RUN+="/usr/lib/udev/bluetooth" 2. create the /usr/lib/udev/bluetooth file, with t...