@Kevin_Z, tx for the follow-up. I'll try and answer your question. My Synology NAS (which is serving the music) is connected through a TP-Link Powerline to an ethernet switch in another room. (This...

RE an AV600 Powerline WiFi Extender (WPA4220) I have successfully connected and set-up the AV600 to the extent it will provide internet access over WiFi via the extender, itself connected through...