If you run a Jamulus server and want to set up a listening stream so that people can listen in without connecting to the Jamulus server, this article will show you one possible setup using Linux and Icecast.

Prerequisites

• A Linux desktop with a working Jamulus setup. For this article I will use Ubuntu 20.04 LTS.
  • https://jamulus.io/wiki/Installation-for-Linux
• ffmpeg
  • Installing on Ubuntu: sudo apt install ffmpeg
• qjackctl
  • This is installed automatically when you install Jamulus on Ubuntu.
• An Icecast server.
  • Setting up an Icecast server is out of the scope of this article. You can rent a hosted server or run your own server.
  • You should have the username, password, and URL to broadcast the sound.

Set up Jamulus

In the settings window,

• Set Audio Channels to Stereo.
• Set Audio Quality to High.
• Untick Auto and crank up the buffers to maximum.

In the main window,

• Tick Mute Myself
• Connect to the Jamulus server
• Mute your own mixer track

Using ffmpeg to broadcast to Icecast

Open a terminal and run