The sound effects "shot.ogg"
is a derivative of "Digital Camera Photo Snap with Autofocus Beep",
https://freesound.org/people/HughGuiney/sounds/352832/,
which is licensed under Creative Commons Attribution 4.0 International Public License
by HughGuiney.
The modification is converting the original into .ogg format.
"shot.ogg" is licensed under Creative Commons Attribution 4.0 International Public License by TeaCon.