/usr/share/man/man1/muinshee.1.gz is in banshee 2.9.0+really2.6.2-7ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/banshee.1.gz
/usr/share/man/man1/banshee.1.gz