/usr/lib/x86_64-linux-gnu/libmusic_hub.so is in libmusic-hub-dev 0.0+13.10.20130920-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libmusic_hub.so.0
/usr/lib/x86_64-linux-gnu/libmusic_hub.so.0