AudioMass

May 7, 2026 ยท View on GitHub

Free full-featured web-based audio & waveform editing tool

Live: https://audiomass.co

Now with multitrack support!

AudioMass now ships with a full multitrack mode -- layer multiple tracks, drag clips around, crossfade overlaps, record onto armed channels, and bounce the whole thing back down to a single file. More details on the about page.

AudioMass Multitrack

Getting it to Run!

  1. please checkout this repo (or download it as zip)
  2. navigate to it through your favorite CLI, then access the src dir
  3. Run go run audiomass-server.go - or if you do not have golang installed, you can use a simple python webserver by running python audiomass-server.py
  4. Navigate to http://localhost:5055/ and have fun!

...

If you want to build the all.build.js minified file for delivery/publishing this then you can use uglify and run as: cat dist/wavesurfer.js dist/plugin/wavesurfer.regions.js oneup.js app.js keys.js contextmenu.js lufs.js ui-fx.js ui.js modal.js state.js engine.js actions.js drag.js recorder.js multitrack.js welcome.js fx-pg-eq.js fx-auto.js local.js id3.js lzma.js | uglifyjs -c -m -o all.build.js

Thanks!