mp3-loop is a lightweight C program that converts any MP3 audio file into a seamless 1-hour loop. Inspired by those long, relaxing YouTube playlists that loop your favorite tracks for hours, this tool gives you the power to do the same — but offline, and with your own audio files.
You’ve probably come across those 1-hour versions of songs on YouTube — ambient tracks, game soundtracks, lofi beats, or even meme songs. They help people relax, study, focus, or just enjoy a good vibe.
So taste this medicine:
mp3_loop your-audio.mp3…and enjoy your favorite track on loop, without ads, buffering, or distractions.
Make sure you have the following dependencies installed:
- libmpg123 – MP3 decoding
- libmp3lame – MP3 encoding
- libsndfile – (used via pkg-config)
- CMake (v3.12 or higher)
- GCC or compatible C compiler
sudo apt update
sudo apt install build-essential cmake libmpg123-dev libmp3lame-dev libsndfile1-dev- Clone the repository:
git clone https://github.com/zephurion/mp3-loop.git
cd mp3-loop- Configure and build using CMake:
mkdir build
cd build
cmake .. -DCMAKE_BUILD_TYPE=Release
makeThis will produce an executable called mp3_loop inside the build/ folder.
Run the tool from the build directory:
./mp3_loop your-audio.mp3If everything goes well, you'll get a new file:
1 hour - your-audio.mp3
It’s the same track, seamlessly looped until it hits exactly 1 hour with a subtle crossfade between loops.
Need help?
./mp3_loop help
# or
./mp3_loop -hmp3-loop/
├── CMakeLists.txt # CMake build file
├── include/
│ └── main.h # Header for function declarations
├── src/
│ └── main.c # Main program logic
├── build/ # Build output (created after compiling)
└── README.md
Want to loop an audio meme or a soundtrack from a game? Just download it as MP3, and let mp3_loop do the rest.
MIT License — feel free to fork, modify, and share.
Enjoy looping. 🌀