Enrich UPnP description: upnp:rating, upnp:actor, upnp:director...

[Daniel Piñeiro <danips det uvigo es>]

Hello again,
I would like to enrich the UPnP description of available resources with
optional properties like upnp:rating, upnp:actor, upnp:director,
dc:language, upnp:playbackCount... is there any simple way to achieve
this without getting hands on with GUPnP or adding them to descriptors
(<desc>)?

Best,
Daniel