If you are running for the first time, no connection alarm will show up in a while. Choose "Change IP" and enter your device ip. Can play .cue files.
Volumio is a free and open source LINUX distribution. Read more about Volumio Project: https://volumio.org.
The Raspberry Pi is a low cost, credit-card sized computer that plugs into a computer monitor or TV, and uses a standard keyboard and mouse. Read more about Raspberry PI: https://www.raspberrypi.org
And, of course, to everyone I met, talk to, read, write with goodwill.