/usr/share/doc/libxmmsclient++-dev/NEWS.Debian.gz is in libxmmsclient++-dev 0.8+dfsg-18.1build3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libxmmsclient++-dev/../libxmmsclient++4v5/NEWS.Debian.gz