Rygel Configuration
The Rygel Server may be configured via its rygel.conf file, which is in INI format. It should be placed in either $HOME/.config/rygel.conf or /etc/rygel.conf.
For instance, this configuration file allows you to enable or disable certain plugins.
The rygel.conf man page (whose source is here) describes the various options.
See also the Startup instructions.