Allstarr

A media server proxy that integrates music streaming providers with your local library. Works with Jellyfin and Subsonic-compatible servers (Navidrome). When a song isn't in your local library, it gets fetched from your configured provider, downloaded, and served to your client. The downloaded song then lives in your library for next time.

THIS IS UNDER ACTIVE DEVELOPMENT

Please report all bugs as soon as possible, as the Jellyfin addition is entirely a test at this point

Quick Start

# 1. Configure environment
cp .env.example .env
nano .env  # Edit with your settings

# 2. Start services
docker-compose up -d --build

# 3. Check status
docker-compose ps
docker-compose logs -f

Nginx Proxy Setup (Required)

This service only exposes ports internally. You must use nginx to proxy to it:

server {
    listen 443 ssl http2;
    server_name your-domain.com;
    
    ssl_certificate /etc/letsencrypt/live/your-domain.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/your-domain.com/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;
    
    # Security headers
    add_header Strict-Transport-Security "max-age=31536000" always;
    add_header X-Content-Type-Options "nosniff" always;
    
    # Streaming settings
    proxy_buffering off;
    proxy_request_buffering off;
    proxy_read_timeout 600s;
    
    location / {
        proxy_pass http://allstarr:8080;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}

Security: All authentication is forwarded to Jellyfin - this is as secure as Jellyfin itself. Always use HTTPS for public access.

Why "Allstarr"?

This project brings together all the music streaming providers into one unified library - making them all stars in your collection.

Features

• Dual Backend Support: Works with Jellyfin and Subsonic-compatible servers (Navidrome, Airsonic, etc.)
• Multi-Provider Architecture: Pluggable system for streaming providers (Deezer, Qobuz, SquidWTF)
• Transparent Proxy: Sits between your music clients and media server
• Automatic Search: Searches streaming providers when songs aren't local
• On-the-Fly Downloads: Songs download and cache for future use
• External Playlist Support: Search and download playlists from Deezer, Qobuz, and SquidWTF with M3U generation
• Hi-Res Audio: SquidWTF supports up to 24-bit/192kHz FLAC
• Full Metadata: Downloaded files include complete ID3 tags (title, artist, album, track number, year, genre, BPM, ISRC, etc.) and cover art
• Organized Library: Downloads save in Artist/Album/Track folder structure
• Artist Deduplication: Merges local and streaming artists to avoid duplicates
• Album Enrichment: Adds missing tracks to local albums from streaming providers
• Cover Art Proxy: Serves cover art for external content

Supported Backends

Jellyfin

Jellyfin is a free and open-source media server. Allstarr connects via the Jellyfin API using your Jellyfin user login. (I plan to move this to api key if possible)

Compatible Jellyfin clients:

• Feishin (Mac/Windows/Linux)
• Musiver (Android/IOS/Windows/Android)

Working on getting more currently

Subsonic/Navidrome

Navidrome and other Subsonic-compatible servers are supported via the Subsonic API.

Compatible Subsonic clients:

PC

• Aonsoku
• Feishin
• Subplayer
• Aurial

Android

• Tempus
• Substreamer

iOS

• Narjo
• Arpeggi

Want to improve client compatibility? Pull requests are welcome!

Incompatible Clients

These clients are not compatible with Allstarr due to architectural limitations:

• Symfonium - Uses offline-first architecture and never queries the server for searches, making streaming provider integration impossible. See details

Supported Music Providers

• SquidWTF - Quality: FLAC (Hi-Res 24-bit/192kHz & CD-Lossless 16-bit/44.1kHz), AAC
• Deezer - Quality: FLAC, MP3_320, MP3_128
• Qobuz - Quality: FLAC, FLAC_24_HIGH (Hi-Res 24-bit/192kHz), FLAC_24_LOW, FLAC_16, MP3_320

Choose your preferred provider via the MUSIC_SERVICE environment variable. Additional providers may be added in future releases.

Requirements

• A running media server:
  • Jellyfin: Any recent version with API access enabled
  • Subsonic: Navidrome or other Subsonic-compatible server
• Credentials for at least one music provider (IF NOT USING SQUIDWTF):
  • Deezer: ARL token from browser cookies
  • Qobuz: User ID + User Auth Token from browser localStorage (see Wiki guide)
• Docker and Docker Compose (recommended) or .NET 9.0 SDK for manual installation

Quick Start (Docker)

The easiest way to run Allstarr is with Docker Compose.

1. Create your environment file

   cp .env.example .env
   

2. Edit the .env file with your configuration:

   For Jellyfin backend:

   # Backend selection
   BACKEND_TYPE=Jellyfin
   
   # Jellyfin server URL
   JELLYFIN_URL=http://localhost:8096
   
   # API key (get from Jellyfin Dashboard > API Keys)
   JELLYFIN_API_KEY=your-api-key-here
   
   # User ID (from Jellyfin Dashboard > Users > click user > check URL)
   JELLYFIN_USER_ID=your-user-id-here
   
   # Music library ID (optional, auto-detected if not set)
   JELLYFIN_LIBRARY_ID=
   

   For Subsonic/Navidrome backend:

   # Backend selection
   BACKEND_TYPE=Subsonic
   
   # Navidrome/Subsonic server URL
   SUBSONIC_URL=http://localhost:4533
   

   Common settings (both backends):

   # Path where downloaded songs will be stored
   DOWNLOAD_PATH=./downloads
   
   # Music service to use: SquidWTF, Deezer, or Qobuz
   MUSIC_SERVICE=SquidWTF
   
   # Storage mode: Permanent or Cache
   STORAGE_MODE=Permanent
   

   See the full .env.example for all available options including Deezer/Qobuz credentials.

3. Start the container

   docker-compose up -d
   

   The proxy will be available at http://localhost:5274.

4. Configure your client

   Point your music client to http://localhost:5274 instead of your media server directly.

Tip

: Make sure the DOWNLOAD_PATH points to a directory that your media server can scan, so downloaded songs appear in your library.

Configuration

Backend Selection

Setting	Description
Backend:Type	Backend type: Subsonic or Jellyfin (default: Subsonic)

Jellyfin Settings

Setting	Description
Jellyfin:Url	URL of your Jellyfin server
Jellyfin:ApiKey	API key (get from Jellyfin Dashboard > API Keys)
Jellyfin:UserId	User ID for library access
Jellyfin:LibraryId	Music library ID (optional, auto-detected)
Jellyfin:MusicService	Music provider: SquidWTF, Deezer, or Qobuz

Subsonic Settings

Setting	Description
Subsonic:Url	URL of your Navidrome/Subsonic server
Subsonic:MusicService	Music provider: SquidWTF, Deezer, or Qobuz (default: SquidWTF)

Shared Settings

Setting	Description
Library:DownloadPath	Directory where downloaded songs are stored
*:ExplicitFilter	Content filter: All, ExplicitOnly, or CleanOnly
*:DownloadMode	Download mode: Track or Album
*:StorageMode	Storage mode: Permanent or Cache
*:CacheDurationHours	Cache expiration time in hours
*:EnableExternalPlaylists	Enable external playlist support

SquidWTF Settings

Setting	Description
SquidWTF:Quality	Preferred audio quality: FLAC, MP3_320, MP3_128. If not specified, the highest available quality for your account will be used

Deezer Settings

Setting	Description
Deezer:Arl	Your Deezer ARL token (required if using Deezer)
Deezer:ArlFallback	Backup ARL token if primary fails
Deezer:Quality	Preferred audio quality: FLAC, MP3_320, MP3_128. If not specified, the highest available quality for your account will be used

Qobuz Settings

Setting	Description
Qobuz:UserAuthToken	Your Qobuz User Auth Token (required if using Qobuz) - How to get it
Qobuz:UserId	Your Qobuz User ID (required if using Qobuz)
Qobuz:Quality	Preferred audio quality: FLAC, FLAC_24_HIGH, FLAC_24_LOW, FLAC_16, MP3_320. If not specified, the highest available quality will be used

External Playlists

Allstarr supports discovering and downloading playlists from your streaming providers (SquidWTF, Deezer, and Qobuz).

Setting	Description
Subsonic:EnableExternalPlaylists	Enable/disable external playlist support (default: true)
Subsonic:PlaylistsDirectory	Directory name where M3U playlist files are created (default: playlists)

How it works:

1. Search for playlists from an external provider using the global search in your Subsonic client
2. When you "star" (favorite) a playlist, Allstarr automatically downloads all tracks
3. An M3U playlist file is created in {DownloadPath}/playlists/ with relative paths to downloaded tracks
4. Individual tracks are added to the M3U as they are played or downloaded

Environment variable:

# To disable playlists
Subsonic__EnableExternalPlaylists=false

Note

: Due to client-side filtering, playlists from streaming providers may not appear in the "Playlists" tab of some clients, but will show up in global search results.

Getting Credentials

Deezer ARL Token

See the Wiki guide for detailed instructions on obtaining your Deezer ARL token.

Qobuz Credentials

See the Wiki guide for detailed instructions on obtaining your Qobuz User ID and User Auth Token.

Limitations

• Playlist Search: Subsonic clients like Aonsoku filter playlists client-side from a cached getPlaylists call. Streaming provider playlists appear in global search (search3) but not in the Playlists tab filter.
• Region Restrictions: Some tracks may be unavailable depending on your region and provider.
• Token Expiration: Provider authentication tokens expire and need periodic refresh.

Architecture

                                                    ┌─────────────────┐
                                               ┌───▶│    Jellyfin     │
┌─────────────────┐     ┌──────────────────┐   │    │    Server       │
│  Music Client   │────▶│     Allstarr     │───┤    └─────────────────┘
│  (Aonsoku,      │◀────│   (Proxy)        │◀──┤
│   Finamp, etc.) │     │                  │   │    ┌─────────────────┐
└─────────────────┘     └────────┬─────────┘   └───▶│   Navidrome     │
                                 │                  │   (Subsonic)    │
                                 ▼                  └─────────────────┘
                        ┌─────────────────┐
                        │ Music Providers │
                        │  - SquidWTF     │
                        │  - Deezer       │
                        │  - Qobuz        │
                        └─────────────────┘

The proxy intercepts requests from your music client and:

1. Forwards library requests to your configured backend (Jellyfin or Subsonic)
2. Merges results with content from your music provider
3. Downloads and caches external tracks on-demand
4. Serves audio streams transparently

Note: Only the controller matching your configured BACKEND_TYPE is registered at runtime, preventing route conflicts and ensuring clean API separation.

Manual Installation

If you prefer to run Allstarr without Docker:

1. Clone the repository

   git clone https://github.com/your-username/allstarr.git
   cd allstarr
   

2. Restore dependencies

   dotnet restore
   

3. Configure the application

   Edit allstarr/appsettings.json:

   For Jellyfin:

   {
     "Backend": {
       "Type": "Jellyfin"
     },
     "Jellyfin": {
       "Url": "http://localhost:8096",
       "ApiKey": "your-api-key",
       "UserId": "your-user-id",
       "MusicService": "SquidWTF"
     },
     "Library": {
       "DownloadPath": "./downloads"
     }
   }
   

   For Subsonic/Navidrome:

   {
     "Backend": {
       "Type": "Subsonic"
     },
     "Subsonic": {
       "Url": "http://localhost:4533",
       "MusicService": "SquidWTF"
     },
     "Library": {
       "DownloadPath": "./downloads"
     }
   }
   

4. Run the server

   cd allstarr
   dotnet run
   

   The proxy will start on http://localhost:5274 by default.

5. Configure your client

   Point your music client to http://localhost:5274 instead of your media server directly.

API Endpoints

Subsonic Backend

The proxy implements the Subsonic API and adds transparent streaming provider integration:

Endpoint	Description
GET /rest/search3	Merged search results from Navidrome + streaming provider
GET /rest/stream	Streams audio, downloading from provider if needed
GET /rest/getSong	Returns song details (local or from provider)
GET /rest/getAlbum	Returns album with tracks from both sources
GET /rest/getArtist	Returns artist with albums from both sources
GET /rest/getCoverArt	Proxies cover art for external content
GET /rest/star	Stars items; triggers automatic playlist download for external playlists

All other Subsonic API endpoints are passed through to Navidrome unchanged.

Jellyfin Backend

The proxy implements a subset of the Jellyfin API:

Endpoint	Description
GET /Items	Search and browse library items
GET /Artists	Browse artists with streaming provider results
GET /Audio/{id}/stream	Stream audio, downloading from provider if needed
GET /Items/{id}/Images/{type}	Proxy cover art for external content
POST /UserFavoriteItems/{id}	Favorite items; triggers playlist download

All other Jellyfin API endpoints are passed through unchanged.

External ID Format

External (streaming provider) content uses typed IDs:

Type	Format	Example
Song	ext-{provider}-song-{id}	ext-deezer-song-123456, ext-qobuz-song-789012
Album	ext-{provider}-album-{id}	ext-deezer-album-789012, ext-qobuz-album-456789
Artist	ext-{provider}-artist-{id}	ext-deezer-artist-259, ext-qobuz-artist-123

Legacy format ext-deezer-{id} is also supported (assumes song type).

Download Folder Structure

Downloaded music is organized as:

downloads/
├── Artist Name/
│   ├── Album Title/
│   │   ├── 01 - Track One.mp3
│   │   ├── 02 - Track Two.mp3
│   │   └── ...
│   └── Another Album/
│       └── ...
├── Another Artist/
│   └── ...
└── playlists/
    ├── My Favorite Songs.m3u
    ├── Chill Vibes.m3u
    └── ...

Playlists are stored as M3U files with relative paths to downloaded tracks, making them portable and compatible with most music players.

Metadata Embedding

Downloaded files include:

• Basic: Title, Artist, Album, Album Artist
• Track Info: Track Number, Total Tracks, Disc Number
• Dates: Year, Release Date
• Audio: BPM, Duration
• Identifiers: ISRC (in comments)
• Credits: Contributors/Composers
• Visual: Embedded cover art (high resolution)
• Rights: Copyright, Label

Development

Build

dotnet build

Run Tests

dotnet test

Project Structure

allstarr/
├── Controllers/
│   ├── JellyfinController.cs              # Jellyfin API controller (registered when Backend:Type=Jellyfin)
│   └── SubsonicController.cs              # Subsonic API controller (registered when Backend:Type=Subsonic)
├── Middleware/
│   └── GlobalExceptionHandler.cs          # Global error handling
├── Models/
│   ├── Domain/                            # Domain entities
│   │   ├── Song.cs
│   │   ├── Album.cs
│   │   └── Artist.cs
│   ├── Settings/                          # Configuration models
│   │   ├── SubsonicSettings.cs
│   │   ├── DeezerSettings.cs
│   │   └── QobuzSettings.cs
│   ├── Download/                          # Download-related models
│   │   ├── DownloadInfo.cs
│   │   └── DownloadStatus.cs
│   ├── Search/
│   │   └── SearchResult.cs
│   └── Subsonic/
│       └── ScanStatus.cs
├── Services/
│   ├── Common/                            # Shared services
│   │   ├── BaseDownloadService.cs         # Template method base class
│   │   ├── PathHelper.cs                  # Path utilities
│   │   ├── Result.cs                      # Result<T> pattern
│   │   └── Error.cs                       # Error types
│   ├── Deezer/                            # Deezer provider
│   │   ├── DeezerDownloadService.cs
│   │   ├── DeezerMetadataService.cs
│   │   └── DeezerStartupValidator.cs
│   ├── Qobuz/                             # Qobuz provider
│   │   ├── QobuzDownloadService.cs
│   │   ├── QobuzMetadataService.cs
│   │   ├── QobuzBundleService.cs
│   │   └── QobuzStartupValidator.cs
│   ├── Local/                             # Local library
│   │   ├── ILocalLibraryService.cs
│   │   └── LocalLibraryService.cs
│   ├── Subsonic/                          # Subsonic API logic
│   │   ├── SubsonicProxyService.cs        # Request proxying
│   │   ├── SubsonicModelMapper.cs         # Model mapping
│   │   ├── SubsonicRequestParser.cs       # Request parsing
│   │   └── SubsonicResponseBuilder.cs     # Response building
│   ├── Validation/                        # Startup validation
│   │   ├── IStartupValidator.cs
│   │   ├── BaseStartupValidator.cs
│   │   ├── SubsonicStartupValidator.cs
│   │   ├── StartupValidationOrchestrator.cs
│   │   └── ValidationResult.cs
│   ├── IDownloadService.cs                # Download interface
│   ├── IMusicMetadataService.cs           # Metadata interface
│   └── StartupValidationService.cs
├── Program.cs                             # Application entry point
└── appsettings.json                       # Configuration

allstarr.Tests/
├── DeezerDownloadServiceTests.cs          # Deezer download tests
├── DeezerMetadataServiceTests.cs          # Deezer metadata tests
├── QobuzDownloadServiceTests.cs           # Qobuz download tests (127 tests)
├── LocalLibraryServiceTests.cs            # Local library tests
├── SubsonicModelMapperTests.cs            # Model mapping tests
├── SubsonicProxyServiceTests.cs           # Proxy service tests
├── SubsonicRequestParserTests.cs          # Request parser tests
└── SubsonicResponseBuilderTests.cs        # Response builder tests

Dependencies

• BouncyCastle.Cryptography - Blowfish decryption for Deezer streams
• TagLibSharp - ID3 tag and cover art embedding
• Swashbuckle.AspNetCore - Swagger/OpenAPI documentation
• xUnit - Unit testing framework
• Moq - Mocking library for tests
• FluentAssertions - Fluent assertion library for tests

License

GPL-3.0

Acknowledgments

• Navidrome - The excellent self-hosted music server
• Deezer - Music streaming service
• Qobuz - Hi-Res music streaming service
• Subsonic API - The API specification