But this also makes it possible to setup a web radio that streams via Spotify, by using the stream relay function in SHOUTcast DNAS server.
(The reason Spotiamp alone can’t act as a SHOUTcast server is because it doesn’t support more than one connected client)
Obviously, install Spotiamp. Then enable its SHOUTcast server on the default address.
Install SHOUTcast DNAS from their website. Configure DNAS to your liking, but in your stream config, specify the streamrelayurl/relayurl as your Spotiamp SHOUTcast url.
(Look at your specific DNAS version for the correct way to do this)
After this Spotiamp should be feeding the SHOUTcast DNAS server live music and a title.