Yes, I connect to the main server and use analog and digital audio outputs from the server to feed my music distribution system as well as my theater receiver.
I actually asked in the forum last year (about this time) if myAgent was even needed on the server so I find it ironic that I'm trying to work with it now. Anyway, I originally did not intend to run myAgent on the server but I also have a Blu-Ray drive on my server and plan to use it to rip disks to my collection as well so I had myAgent setup for that on the server.
In any case, even if I wasn't running myAgent on the server, I can't see how in myServer to have both my front speaker analog output and my digital optical output both active for a given radio in the myMusic, Gmail, Pandora, or InternetMusic apps settings. Is there anything we can do in the background to link specific outputs to be together?