DJ Toolkit

Prep tools for working DJs. Free and open source, for Windows and macOS.

• Acapella prep. Lock the beat grid on four beats at the chorus, mark where the vocal comes in, and export it with a count-in. It lands on the downbeat, first time.
• Spotify sync. Each music folder becomes a Spotify playlist. You see every change before anything changes.
• Tutorials. Short, opinionated prep guides you can question, anonymously.
• Requests. Vote on what gets built next, suggest a feature or report a bug, right from the app.

Two looks: Booth for dark rooms and late-night prep, Daylight for a laptop in the sun. See it, and try the four-beat lock, on the website.

Early days. It's tested with generated audio and about 160 automated tests, but not yet with many real acapellas or a live Spotify account. Try it and tell us what felt off.

Install

Download it from the latest release. Nothing else to install.

Windows 10 and 11: unzip DJ-Toolkit-Windows.zip, open the folder and double-click DJ Toolkit. If Windows says it protected your PC, choose More info, then Run anyway.

macOS 12 or later (Apple silicon): open DJ-Toolkit-macOS.dmg and drag DJ Toolkit into Applications. If macOS says it can't check the app, open System Settings > Privacy & Security and choose Open Anyway.

The warnings appear because the app isn't signed with a paid certificate yet; all of its code is here, and you can check that a download was built from it. Your settings and your Spotify login stay on your computer, exports are saved as new files, and your music files are never changed. How to use it: docs/user-guide.md. Prefer to run it from source? docs/getting-started.md takes about five minutes.

Help build it

DJs, designers, writers and developers are all welcome, and AI-assisted work is too.

I want to	Read
Ask a question, or talk DJ	Discussions
Vote on ideas, report a bug or make a first change	CONTRIBUTING.md
Get it running for development	docs/getting-started.md
Understand how it fits together	docs/architecture.md
Work with an AI coding agent	docs/vibe-coding.md (agents read AGENTS.md)
Know who it's for and how it talks	docs/ux/
Find something to build	Roadmap board and docs/roadmap.md
Grow from first pull request to maintainer	GOVERNANCE.md

Licence

MIT for DJ Toolkit's own code. The downloads also contain other people's software under its own licences, some of them copyleft (GPL, LGPL, MPL). Each download carries THIRD-PARTY-LICENSES.txt: what is inside, each part's licence and where its source is, and the full licence texts. It sits next to DJ Toolkit.exe on Windows, and on a Mac in the app (right-click it, Show Package Contents, then Contents, Resources). docs/dependencies.md says which parts and why they are there, and each release has a list of every library inside it (the .cdx.json files).

DJ Toolkit is an independent project, not affiliated with Spotify or AlphaTheta (rekordbox).