Find the *.oga files here
/usr/share/sounds/Yaru/stereo/

Technical notes, and other ideas.
Find the *.oga files here
/usr/share/sounds/Yaru/stereo/
Use this to activate or turn off the plug-in. The sound icon on the top bar, now has additional options to change the sound source without having to open the sound interface.
Use: https://extensions.gnome.org/extension/906/sound-output-device-chooser/
At the time of this writing the package to install was the following:
sudo apt-get install libsdl-sound1.2
The command in the bash script to use is as follows:
playsound ding.wav