BluOSScrobbler

Scrobble BluOS played tracks https://github.com/nicolasm/bluosscrobbler

Description

Bluesound devices like the Node 2021 don't offer support for Last.fm scrobbling.

The app polls the playing status of your device by using the BluOS API.

The Last.fm now playing status is updated when:

• playing a new track,
• playing after pause.

A track is scrobbled when either half-played or played for at least 4 minutes,

The poller no longer uses the etag attribute of the /Status response. I misunderstood the /Status endpoint, I thought it was supposed to change only when a new track was played when I developed my app.

I realized using the etag value was a bad idea from the start, because it changed for every user action performed in the Controller app: volume control, playlist modifications..

The /Playlist endpoint pointed to the right direction:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<playlist id="3295" modified="0" length="12">
	<song songid="8403" id="0" service="LocalMusic">
		<title>Tout éteindre</title>
		<art>Jil Caplan</art>
		<alb>Sur les cendres danser</alb>
		<fn>/var/mnt/.......................</fn>
		<composer>Emilie Marsh</composer>
		<quality>cd</quality>
	</song>
</playlist>

playlist id is the unique id for the current queue state (e.g., 1054). It is same as the <pid> in /Status response.

song id is the track position in the current queue. If the track is currently selected, track id is same as <song> in /Status response.

The poller now relies on a MD5 hexadecimal checksum of the concatenation of the fields:

• playlist id,
• song id,
• artist name,
• album name
• and track name

to determine if the current /Status response refers to a new track play.

The playlist id changes as soon as new songs are added to the play queue.

TODO:

• There may be a few issues when using random multiples times while adding new songs to the queue after a song has been scrobbled: song being scrobbled twice maybe because its position in the queue has changed...
• Handle the one song on repeat case: the only thing changing is the etag value. I tried something, but it didn't work out as I expected.

Requirements

Java 11

Setup

Copy application.yaml.example to application.yml.

Update your BluOS device ip address in the Yaml file.

application:
  bluos:
    host: 192.168.1.7
    port: 11000

Launch the app.

In your browser, call http://localhost:18666/v1/bluossrobbler/lastfm/auth/request

Allow access to the BluOSScrobbler application.

This will call back the app and fetch a web service session from Last.fm.

Your browser should display a response similar to this:

{
	"session": {
		"name": "username",
		"key": "your-session-key",
		"subscriber": false
	}
}

Set the session key in the Yaml file.

scrobblers:
    lastfm:
      ...
      sessionKey: your-session-key

Package the app

./mvnw clean package

Copy the app to your NAS or server and start it

nohup java -jar bluosscrobbler-1.RELEASE.jar

License

Copyright (c) 2021-2024, Nicolas Meier.

MIT