Raveberry can stream its audio output via icecast.
In order to enable streaming, you can go to the settings page (https://raveberry/settings) when logged in as admin and click "Enable Streaming".
Note that you need to have the icecast2 package installed. Raveberry will tell you to do this, but not perform the installation automatically.
On Raspbian, run sudo apt-get install icecast2. You will be prompted to set an admin password during installation. Although recommended, it is not required for Raveberry to stream. If you don't use the default source password (different from the admin password), you need to specify it in /opt/raveberry/setup/mopidy_icecast.conf like this:
output = lamemp3enc ! shout2send async=false mount=stream password=<password>
After enabling streaming in the /settings page, icecast will be configured and started. Mopidy will be configured to output to the icecast stream instead of the local speakers.
The stream is available at http://raveberry:8000/stream (original icecast stream) and http://raveberry/stream (routed to icecast by nginx).
Since ogg streams have been reported to cause problems, an mp3 stream is used.
As recommended by mopidy's documentation, a fallback stream to a soundfile with 10 seconds of silence is used. This will be activated if you pause Raveberry or no songs are played. After playing music again, streams take about 30 seconds to move to the primary stream again. Alternatively, reload the stream to instantly reconnect.
As streaming relies on system services, it will not work when using raveberry run.
By default, the stream is password protected with these credentials:
Username: raveberry
Password: raveberry
You can change this through icecast's admin interface at http://raveberry:8000/admin. Note that the stream needs to be playing for you to be able to configure it.
When sharing a link you can integrate the credentials directly like this:
https://raveberry:raveberry@raveberry/stream
If you want to disable authentication completely, you need to edit icecast's config file located at /etc/icecast2/icecast.xml and remove the four lines of the authentication tag at the end of the file. For more information consult icecast's documentation.
If you want to enable or disable streaming with the docker setup, use the respective docker-compose files. The setting in the admin page does not toggle streaming. You can provide a custom icecast configuration in icecast.docker-compose.yml to tweak it.