Third Party intergrations
Currently, only one third-party integration is available: Spotify Connect.
You can define here a name for the appliance to show up in the official Spotify app as a speaker.
Note that the spotifyd software used for this requires the name to NOT have spaces in it.
Also note that this requires a PREMIUM Spotify account and will not work with a free one.
Here's what it looks like in the offical Spotify client for desktop: