Rygel-0.32.1 will not stream outside the gnome evironment

[John Frankish <john frankish outlook com>]

I'm trying to get rygel-0.32.1 to stream on an RPi3

Although rygel looks to be working - I get the harvested messages, etc - nothing is actually being streamed.

I also have rygel-0.32.1 on an x86_64 and get the same problem unless I run rygel in the gnome environment.

Once I have run rygel in the gnome environment on the x86_64, I can exit to the console, start a non-dbus 
window manager and rygel will stream as expected.

Since it's not really practical to compile the whole gnome nine yards for the RPi3, I'm trying to figure out 
what I'm missing to make rygel work.

I have gst-plugins-*, gupnp-*, libgee, gssdp, shared-mime-info, libmediaart and gsettings-desktop-schemas - 
is something else required?

I take it that dbus is not required to be started?

Is any particular mime or xdg configuration required that gets done automagically by gnome and hidden 
somewhere in dconf/gsettings? 

Regards
John