[ocicat]

Originally Posted by IIMarckus

...but I don't know how to start it.

1. Find the name of the primary package installed:
   
   $ pkg_info | grep mpd
2. Determine what files were installed by the package:
   
   $ pkg_info -L <complete-package-name>
   
   Most important, see if a manpage was installed (typically with a *.0 extension...).
3. Study the manpage. A good chance exists that you can view it simply via:
   
   $ man mpd