Airsonic

Airsonic is a free and open-source personal media streamer.
It is a fork of Subsonic and thus is compatible with
most of its clients.

Server

A server can be setup via docker with the linuxserver image.

Client

As already mentioned it is possible to use a bunch of different clients because
the server is compatible with most of the Subsonic clients.

• Ultrasonic is a
  free and open-source android subsonic/airsonic client.