/usr/lib/x86_64-linux-gnu/libvorbis.so.0 is in libvorbis0a 1.3.4-2+deb8u1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libvorbis.so.0.4.7
/usr/lib/x86_64-linux-gnu/libvorbis.so.0.4.7