The Universal Media Sync Engine. Automatically pauses Spotify when any video plays.
Download · Demo · How it works
StillSound automatically pauses your Spotify when you play a video (on YouTube, Twitter, Reddit, Netflix, Twitch, etc.) and resumes it when you stop. No more alt-tabbing to pause your music during lectures or while browsing feeds.
- Universal Multi-Site Support: StillSound is no longer just for YouTube. It now seamlessly supports Twitter, Reddit, Netflix, Prime Video, Twitch, Coursera, Udemy, and more. Manage enabled sites via toggles directly in the app.
- Dynamic Island UI: A complete aesthetic overhaul featuring an iOS-inspired Dynamic Island, complete with album art, track details, and playback controls.
- Audio-Responsive Aesthetics: The desktop app and extension now glow and pulse with the exact colors of the Spotify album art you are currently listening to.
- Multi-Device Hand-off: Transparently shows exactly which device Spotify is playing on (e.g., iPhone) and gracefully transitions state across devices.
- Bi-Directional Volume Sync: Changes to your volume in the native Spotify app or on your phone instantly reflect on StillSound's new slider.
- Extension Controls: Full music playback controls (Play, Pause, Next, Prev) right from your browser's extension popup.
- Multi-Browser Sync: Intelligent cross-browser aggregation ensures Spotify only resumes when ALL connected browsers have stopped playing. No more race conditions when switching between Firefox and Brave.
- Minimize to Tray: Keep the app running in the system tray without cluttering your taskbar.
- Autostart: Optionally launch StillSound on system boot.
- Initial release featuring the core WebSocket sync engine and Spotify OAuth PKCE flow.
┌─────────────────────┐ WebSocket ┌──────────────────┐ Spotify API ┌──────────┐
│ Multiple Browsers │ ◄───────────────► │ StillSound App │ ◄────────────────► │ Spotify │
│ (Chrome, FF, Brave) │ localhost:9876 │ (Desktop) │ OAuth + REST │ │
└─────────────────────┘ └──────────────────┘ └──────────┘
- The browser extension detects when a supported video plays or pauses on any of the enabled websites.
- It intelligently aggregates the state and sends it to the StillSound desktop app over a local WebSocket.
- The desktop app commands Spotify to pause or resume accordingly.
- Download the latest
.exeinstaller from the Releases page. - Run the installer — choose where to install.
- Launch StillSound from the Start Menu or desktop.
- Download or clone this repository to get the
browser-extensionfolder. - Open Browser →
chrome://extensions/ - Enable Developer Mode (toggle in the top right).
- Click Load Unpacked → select the
browser-extensionfolder.
- Open Firefox →
about:debugging→ "This Firefox". - Click Load Temporary Add-on.
- Select the
manifest.jsoninside thebrowser-extensionfolder.
The app walks you through setup:
- Spotify Client ID — Go to Spotify Developer Dashboard, create an app, copy the Client ID, and set the Redirect URI to
http://127.0.0.1:8921/callback. - Connect — Click "Connect to Spotify" in the app, sign in, and approve.
That's it. Open a YouTube video and your Spotify will pause automatically.
Requires Rust, Node.js, and MSVC Build Tools.
# Development
npm run dev
# Build installer (.exe)
npm run buildThe installer is output to src-tauri/target/release/bundle/nsis/.
├── src/ # Frontend (HTML/CSS/JS)
│ ├── index.html
│ ├── styles.css
│ └── main.js
├── src-tauri/ # Rust backend
│ ├── src/lib.rs # Sync engine
│ ├── tauri.conf.json # App & installer config
│ └── Cargo.toml # Dependencies
└── browser-extension/ # Chrome extension
├── manifest.json
├── background.js
├── content.js
├── popup.html
└── popup.js
Built by saketjndl (.sodiumcyanide).
If StillSound helps your study sessions, consider starring the repo ★