/usr/lib/x86_64-linux-gnu/libburner-burn3.so is in libburner-media3-dev 3.0.4-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libburner-burn3.so.1.2.0
/usr/lib/x86_64-linux-gnu/libburner-burn3.so.1.2.0