Adding a sound to act as a default tone

Does anyone if you can add a sound here to use for the default alert tone?

This folder seems to have the default sounds in it.

/usr/share/sounds/gnome/default/alerts

There’s a file called.

/usr/share/gnome-control-center/sounds/gnome-sounds-default.xml

Add a new sound section to this file and change the filename and name items to your new file.

<sound …>

<name xml:lang=“en_GB”>Sonar-jg</name>
<filename>/usr/share/sounds/gnome/default/alerts/sonar-jg.ogg</filename>

No need to restart, just reopen the settings app and your new sound will be listed.