I’ve the same problem (unfortunately 🙁 ) on both computers.
Informations on the server status page:
Firefly Media Server Running
File scanner Idle
Songs Served 0
DB Version 2
Client IP Action
192.168.1.135 Serving xml-rpc method
This looks to be a multicast issue. You’ll need to make sure you aren’t firewalling anything on the fsg. You’ll need to allow inbound from 220.127.116.11 destined to udp port 5353, and outbound to 18.104.22.168 either to or from udp port 5353.
Also, you’ll need to enable inbound tcp on port 3689.
Bottom line is that you aren’t seeing multicast packets. Most likely it’s because of firewall on the fsg.