/usr/share/doc/libsox-fmt-ao/README.gz is in libsox-fmt-ao 14.3.2-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libsox-fmt-ao/../libsox1b/README.gz
/usr/share/doc/libsox-fmt-ao/../libsox1b/README.gz