The audio files under `sounds/` are dedicated to the public domain under the
Creative Commons CC0 1.0 Universal Public Domain Dedication.

You may copy, modify, distribute, and use these files, including commercially,
without asking permission. Attribution is appreciated but not required.

Legal code: https://creativecommons.org/publicdomain/zero/1.0/legalcode
SPDX identifier: CC0-1.0