OPEN SOURCE // GPL-3.0
ASTRA
Audiophile desktop music player
A music player for people who still have a music library. Your FLACs, your MP3s, your carefully tagged collection, played back the way it was meant to sound.
Audiophile desktop music player
A music player for people who still have a music library. Your FLACs, your MP3s, your carefully tagged collection, played back the way it was meant to sound.
Not another wrapper around a web player. Real audio processing for people who care about how their music sounds.
Pre-buffered crossfade-free transitions so albums flow the way they were mastered. No gaps, no glitches, no compromises.
FLAC, MP3, WAV, OGG, AAC, M4A, OPUS, WMA, AIFF natively, with an FFmpeg fallback for the rest.
Point it at your folders. Metadata extraction, album artwork, searchable library by artist, album, or track. Favorites and history tracked automatically.
Real-time audio analysis through a native C++ module. The analysis path is tapped independently from your output routing.
Accent colors pulled from album art. Fullscreen mode with ambient spectrum backdrop. A home page sky that changes with the time of day.
Output device selection, loudness normalization, multichannel support with per-channel remapping, and Bluetooth delay calibration.
Multichannel Atmos decoding that works without Atmos-compatible hardware. Decode and play back spatial tracks natively.
Edit tags, artwork, and metadata directly inside the player. No need to switch to a separate tool to fix a misspelled artist.
A keyboard shortcut to jump anywhere in your library without touching the mouse. Search tracks, albums, and artists instantly.
Real-time visualizers powered by native C++. Seven scopes, fully customizable. Drag, resize, and arrange them however you want. The analysis path is independent from output routing, so scopes always reflect the source material.
Pitch-lock detection with waveform display. Stable, coherent trace even at low frequencies.
Configurable FFT with logarithmic frequency scaling and adjustable smoothing.
Stereo phase imaging. Visualize the spatial relationship between your left and right channels.
Pick from seven scopes, arrange them in any layout, resize to fit your workflow. The entire scope rack is yours to customize. Save presets and switch between setups on the fly.
A fully parametric equalizer with up to 10 bands, a live frequency response graph with spectrum overlay, and built-in presets. If you use AutoEQ, you can import headphone calibration profiles directly.
Album art backdrop with ambient spectrum visualization. Lean back and let the music take over.
When you just want your music playing without the full window, the mini player keeps controls accessible while staying out of your workspace.
Astra integrates with the services you already use. Everything is opt-in and off by default.
Show what you're listening to on your Discord profile, complete with cover art.
Track your listening history automatically. Disabled by default.
Browse and play your self-hosted media server library directly inside Astra.
A local REST API lets external tools read playback state, subscribe to real-time updates, and optionally control playback. Loopback only, bearer token auth, disabled by default.
{
"playbackState": "playing",
"currentTime": 42.13,
"duration": 218.56,
"queueLength": 37,
"outputDeviceLabel": "MacBook Pro Speakers",
"visualizerLineColor": "#38bdf8",
"currentTrack": {
"id": "12345",
"title": "Running Up That Hill",
"artist": "Kate Bush",
"album": "Hounds of Love",
"isFavorite": false,
"artworkUrl": "http://127.0.0.1:38401/..."
}
}
Prism is a standalone audio metering app built on a port of Astra's C++ scope engine. It monitors your system output with the same scopes you know from Astra. Its Astra module connects through the Astra API to show the currently playing track and control playback directly from the meter display.
| Component | Detail | Engine |
|---|---|---|
| Framework | Electron + Vite | TypeScript |
| Audio Pipeline | Web Audio API + native module | C++ DSP |
| Visualizers | 7 scopes, fully customizable rack layout | C++ Native |
| Formats | FLAC MP3 WAV OGG AAC M4A OPUS AIFF WMA | Native + FFmpeg |
| Spatial Audio | Dolby Atmos multichannel decoding | No special hardware |
| Equalizer | Parametric, 10-band, AutoEQ import | Web Audio |
| Platforms | Windows, macOS, Linux | Cross-platform |
| License | GNU General Public License v3.0 | Open Source |
Prebuilt binaries for all major platforms. Or build it yourself if that's your thing.
git clone https://github.com/Boof2015/astra.git cd astra npm install npm run dev # development npm run dist # package for current platform