Please correct me if I’m wrong – I’m trying to understand what Volumio can and cannot do:
Volumio seems to only play the files, coming from somewhere else, through its audio jack or DAC connected by cable to an amplifier. Volumio does not serve audio files to other equipment over the local network (DLNA) out of the box. There is a way to enable the DLNA part in Volumio but it’s using the app “MiniDLNA” which cannot stream Web radio. how-start-the-dlna-server-for-volumio-the-t2401.html
I had previously installed MiniDLNA on a Raspberry Pi 2 running NOOBS and I can confirm that streaming Internet radio (m3u files) does NOT work