My first attempt to configure RoPieee XL as it has been partially successful. Connected to my wired network, MC recognizes it and it appears under "Playing Now".
I have thus been able to listen to music in two deferent places: in my study, where I have the PC that hosts my library, connected to a headphone amplifier with DAC and in my living room, where the Raspberry is connected to a DENON amplifier.
But, if I try to use WiFi, instead of cable, RoPiee XL does not show up MC. Apparently, I have configured WiFi correctly in RoPiee. But something is missing and I don't know how I should use WPA-PSK (Passphrase).
I attach two images, because I don't know how to include them in the body of the post.
During this week I will carefully read the MC Wiki and the forums to find the solution. It will take me a long time, due to my poor English and my limited knowledge of networking and DLNA.