HamSanders/soundbox

The free, open-source, local alternative to ElevenLabs and Suno.
Sound effects, music, songs with lyrics, speech and voice cloning from
open-weight models on your own GPU. Arrange it on a timeline, or let Claude
Code, Cursor or any MCP agent do it. No account, no credits, works offline. MIT.
Download · Hear it · For agents · Models · Docs · Website
Watch: 30-second tour · Under the hood · Agents and MCP
## Describe it, hear it, arrange it
| Make | Arrange | Connect |
| Sound effects and ambience from a description | A multi-track timeline with effects, MIDI and mixdown | An MCP server with 21 tools for Claude Code and Cursor |
| Instrumentals, or songs from a lyric sheet | Cast saved voices onto the lines of a script | A local HTTP API on port 17494 |
| Speech, voice cloning and voice conversion | Extend, cover, repaint, split into stems | Three agent skills, including a full sound pass |
Four models are verified end to end and on by default; 61 more can be switched
on from the Models page. Each model's licence is shown before you download it.
Everything stays in one SQLite file and a folder of WAVs under ~/.soundbox.
Profiles give you several libraries in one install, one per game or client,
switched from the header without a restart; the models are shared.
Screenshots · studio, music, SFX, Voice Lab, models
| Music. A style prompt or a lyric sheet in, a shelf of takes out. | Sound effects. Every take kept with its prompt, model and seed. |
| Voice Lab. Clone a voice, then cast it onto script lines. | Models. Licence and VRAM shown before you download. |
## Download
| Platform | Installer |
| Windows 10 and 11 (x64) | Soundboxx.y.zx64-setup.exe |
| macOS, Apple silicon | Soundboxx.y.zaarch64.dmg |
| macOS, Intel | Soundboxx.y.zx64.dmg |
The installer carries its own runtime. The builds are not signed yet, so the
first launch asks you to confirm (where). Open
SFX, describe the material, the action and the space, and generate: the first
model downloads when you pick it, with its licence shown first.
| Hardware | What to expect |
| NVIDIA GPU (Windows, Linux) | CUDA. A few GB of VRAM covers the verified models; MiniMax Music 3 wants about 10 GB. |
| AMD or Intel GPU | Runs on the CPU unless you set SOUNDBOXAUDIOCPPBACKEND=vulkan (how). Vulkan is not yet confirmed on the verified models; reports welcome. |
| Apple silicon | Metal. Installers exist; none of the verified models has been confirmed on a Mac yet. |
| No dedicated GPU | Works, slowly. A clip that takes seconds on a GPU takes minutes on the CPU. |
Linux, Docker and running from source are under Run from source.
### Install with a prompt
Paste this into Claude Code, Cursor or Codex:
text
Install Soundbox on this machine and confirm it works, following
https://github.com/HamSanders/soundbox/blob/main/docs/INSTALL-AGENT.md
The guide tells the agent to check the GPU and VRAM first, to show you each
model's size and licence before downloading it, never to accept a
non-commercial licence for you, and to finish by generating one sound and
telling you where the WAV is.
## Hear it
Each clip was generated by Soundbox from the prompt shown. The
samples site has around 600 more.