mixcut

A macOS desktop app for splitting .m4a audio files into individual tracks using CUE sheets.

Drop in a long audio file, mark track boundaries on the waveform (or import a .cue file), and mixcut splits it into tagged .m4a tracks using m4acut and AtomicParsley.

Download

Download the latest .dmg from the Releases page.

Installation

1. Open the .dmg and drag mixcut to your Applications folder.
2. The app is not code-signed. macOS will block it on first launch. To bypass Gatekeeper, open Terminal and run:

xattr -cr /Applications/mixcut.app

3. Open mixcut from Applications as normal.

Development

Requires Node.js 24+ and pnpm.

pnpm install
pnpm start

Scripts

Command	Description
pnpm start	Run the app in dev mode
pnpm test	Run tests
pnpm run package	Package the app (no distributable)
pnpm run make	Build the .dmg distributable

Acknowledgements

m4acut and L-Smash for lossless M4A splitting. AtomicParsley for metadata tagging.