/usr/share/man/man1/nyxmms2.1.gz is in xmms2-client-nycli 0.8+dfsg-9.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/xmms2.1.gz
/usr/share/man/man1/xmms2.1.gz