/usr/lib/x86_64-linux-gnu/librubberband.so.2 is in librubberband2 1.8.1-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/librubberband.so.2.1.0
/usr/lib/x86_64-linux-gnu/librubberband.so.2.1.0