Welcome To Free Sound

The free, light, self hostable app to download SoundCloud songs as a .mp3

Features

• 🎵 Download SoundCloud tracks as MP3 files
• 📊 Display track information (title, artist, duration, plays, likes)
• ⚡ Fast HLS stream processing
• 📱 Simple and light design

Architecture

• Frontend: Next.js 16 with TypeScript and Tailwind CSS
• Backend: FastAPI with async HTTP client and ffmpeg

Quick Start

Note: We do not reccommend setting this up public facing. As of now anyone can download songs and there is no authentication method. Please only use on private or properly secured networks.

Option 1: Docker (Recommended)

The easiest way to run FreeSound is using Docker:

1. Copy the environment file:

   cp .env.sample .env

2. Edit .env file and configure the settings:

   # Open .env in your editor and update:
   # For local Docker setup (services in same network):
   NEXT_PUBLIC_API_URL=http://backend:8000
   
   # For remote backend (if backend is on different server):
   # NEXT_PUBLIC_API_URL=http://your-server-ip:8000
   
   # For accessing from host machine (if needed):
   # NEXT_PUBLIC_API_URL=http://localhost:8000

   Note: The .env file is gitignoredand won't be committed to the repository. Only.env.sample` is tracked.

3. Build and start all services:

   docker-compose up -d

4. View logs:

   docker-compose logs -f

5. Stop services:

   docker-compose down

The application will be available at:

• Frontend: http://localhost:3000
• Backend API: http://localhost:8000

See DOCKER.md for detailed Docker documentation.

Option 2: Manual Setup

Prerequisites

• Node.js 18+ (or Bun)
• Python 3.8+
• ffmpeg installed on your system

1. Install ffmpeg

Ubuntu/Debian:

sudo apt-get update
sudo apt-get install ffmpeg

macOS:

brew install ffmpeg

Windows:
Download from https://ffmpeg.org/download.html

2. Start the Backend

cd backend
python3 -m venv venv
source venv/bin/activate  # On Windows: venv\Scripts\activate
pip install -r requirements.txt
python main.py

The backend will run on http://localhost:8000

3. Start the Frontend

In a new terminal:

npm install  # or bun install
npm run dev  # or bun dev

The frontend will run on http://localhost:3000

4. Use the Application

1. Open http://localhost:3000 in your browser
2. Paste a SoundCloud track URL
3. Click "Download" to get the MP3 file

Project Structure

freeSound/
├── app/                    # Next.js frontend
│   ├── page.tsx            # Main page component
│   ├── layout.tsx          # Root layout
│   └── globals.css         # Global styles
├── backend/                 # FastAPI backend
│   ├── main.py             # FastAPI application
│   ├── soundcloud_client.py # SoundCloud API client
│   ├── downloader.py       # Download and conversion handler
│   ├── config.py           # Configuration settings
│   ├── utils/              # Utility modules
│   └── requirements.txt
└── README.md

How It Works

1. User Input: User pastes a SoundCloud URL in the frontend
2. URL Resolution: Backend resolves the URL to get track metadata
3. Stream Extraction: Backend extracts the HLS (m3u8) stream URL
4. Direct Download: Backend uses ffmpeg to download the HLS stream directly and convert to MP3 (handles authentication automatically)
5. Fallback: If direct download fails, falls back to segment-by-segment download
6. Download: Frontend receives and downloads the MP3 file

API Endpoints

Backend (FastAPI)

• GET / - Health check
• GET /health - Health check with ffmpeg status
• POST /download?url=<soundcloud_url>&format=mp3 - Download and convert track
• GET /track-info?url=<soundcloud_url> - Get track information

Frontend

• GET / - Main application page

Configuration

Docker Setup

1. Copy the sample environment file:

   cp .env.sample .env

2. Edit .env and configure:

   • NEXT_PUBLIC_API_URL: The backend API URL that the frontend will use
     • For Docker: http://backend:8000 (uses Docker service name)
     • For remote backend: http://your-server-ip:8000
     • For local development: http://localhost:8000

Manual Setup

Backend

No configuration needed. The backend automatically extracts client IDs from SoundCloud.

Frontend

Create a .env.local file (optional):

NEXT_PUBLIC_API_URL=http://localhost:8000

If not set, defaults to http://localhost:8000

Development

Backend Development

cd backend
python main.py
# or
uvicorn main:app --reload

Frontend Development

npm run dev
# or
bun run dev

Documentation

• Backend Documentation

Troubleshooting

Backend Issues

• ffmpeg not found: Install ffmpeg and ensure it's in your PATH
• Connection errors: Check if port 8000 is available
• SoundCloud API errors: Some tracks may be private or restricted

Frontend Issues

• Cannot connect to backend: Ensure backend is running on port 8000
• CORS errors: Backend CORS is configured to allow all origins in development
• Download not working: Check browser console and backend logs

License

This project is licensed under the MIT License - see the LICENSE file for details.

Note: This project is for educational & learning purposes. Please respect SoundCloud's terms of service and copyright laws.