player

Player

This module allows running librespot-java in headless mode as a Spotify Connect device.

Get started

All the configuration you need is inside the config.toml file. If none is present, a sample config.toml will be generated the first time the jar is run. There you can decide to authenticate with:

• Username and password
• Zeroconf
• Facebook
• Auth blob
• Stored credentials

The suggested way to authenticate if you're not considering Zeroconf is to:

1. Enable stored credentials:

   [auth]
      storeCredentials = true
      credentialsFile = "some_file.json"

2. Authenticate with username and password:

   [auth]
      strategy = "USER_PASS"
      username = "<username>"
      password = "<password>"

3. Set authentication strategy to stored credentials and remove sensible data:

   [auth]
      strategy = "STORED"
      username = ""
      password = ""

Username and password

[auth]
    strategy = "USER_PASS"
    username = "<username>"
    password = "<password>"

This is the simplest authentication method, but less secure because you'll have a plaintext password in your configuration file.

Zeroconf

[auth]
    strategy = "ZEROCONF"

Becomes discoverable with Spotify Connect by devices on the same network, connect from the devices list. If you have a firewall, you need to open the UDP port 5355 for mDNS. Then specify some random port in zeroconf.listenPort and open that TCP port too.

Facebook

[auth]
    strategy = "FACEBOOK"

Authenticate with Facebook. The console will provide a link to visit in order to continue the login process.

Auth blob

[auth]
    strategy = "BLOB"
    blob = "dGhpcyBpcyBzb21lIGJhc2U2NCBkYXRhIQ=="

This is more advanced and should only be used if you saved an authentication blob. The blob should be in Base64 format. Generating one is currently not a feature of librespot-java.

Stored credentials

[auth]
    strategy = "STORED"
    credentialsFile = "some_file.json"

Stored credentials are generated and saved into auth.credentialsFile if auth.storeCredentials is set to true and auth.strategy is not ZEROCONF. The file created is a JSON file that allows you to authenticate without having plaintext passwords in your configuration file (and without triggering a login email).

Run

You can download the latest release from here and then run java -jar librespot-player-jar-with-dependencies.jar from the command line.

Audio output configuration

On some systems, many mixers could be installed making librespot-java playback on the wrong one, therefore you won't hear anything and likely see an exception in the logs. If that's the case, follow the guide below:

1. In your configuration file (config.toml by default), under the player section, make sure logAvailableMixers is set to true and restart the application
2. Connect to the client and start playing something
3. Along with the previous exception there'll be a log message saying "Available mixers: ..."
4. Pick the right mixer and copy its name inside the mixerSearchKeywords option. If you need to specify more search keywords, you can separate them with a semicolon.
5. Restart and enjoy

Linux note: librespot-java will not be able to detect the mixers available on the system if you are running headless OpenJDK. You'll need to install a headful version of OpenJDK (usually doesn't end with -headless).

Build it

This project uses Maven, after installing it you can compile with mvn clean package in the project root, if the compilation succeeds you'll be pleased with a JAR executable in player/target. To run the newly build jar run java -jar player/target/librespot-player-jar-with-dependencies.jar.