Greasy Fork is available in English.
Download SoundCloud without external service.
< Commentaires sur Local SoundCloud Downloader
It is because Firefox haven't implement WritableStream, which is needed by this script. https://developer.mozilla.org/en-US/docs/Web/API/WritableStream#Browser_Compatibility
But you can upgrade to latest version, because I just added necessary polyfills.
Not working in Firefox 72, Tampermonkey v4.10
Loads correctly, following error in developer console if I click on the download button: TypeError: s.WritableStream is not a constructor