Audacity: multi-track audio editor and recorder, repository status and licence

What it supplies: Audacity is an easy-to-use, multi-track audio editor and recorder for Windows, macOS, GNU/Linux and other operating systems. This repository README mainly reports project status: it says the repository is undergoing major structural change for Audacity 4, with a new UI. Useful for: - Find where the Audacity 3.x and Audacity 4 build instructions live. - Learn which branch to use to submit patches to Audacity 3.x. - Check the licence terms for the code and the documentation. First action: - Use the Audacity website for downloads and general information. - To build 3.x, follow the BUILDING.md at the release-3.7.0 tag; for Audacity 4, use BUILDING.md on master. - For 3.x patches, branch off audacity3. - Follow the YouTube channel, Discord and blog for updates. Prerequisites and limits: The README names Audacity 3.x, with 3.7.0 as the tag of its build instructions, and Audacity 4 in development. It gives no system or tool requirements; those are in the BUILDING.md files. - The master branch is not particularly friendly to new contributors while Audacity 4 is under development. - The README does not describe editing features or workflows; it points to the website. - Some code carries different licence terms from the overall GPLv3. The README states Audacity is open source software licensed GPLv3. Most code files are GPLv2-or-later, with exceptions for third-party libraries in /au3/lib-src and VST3-related code, and documentation is licensed CC-by 3.0 unless otherwise noted. Details are in the licence file, which was not read here. Audio you edit carries its own rights. Written from the README text only. Statements are as the README gives them; nothing was built or run and no audio was edited. Based on README text only; LICENSE.txt, the BUILDING.md files and the website were not read. No build or run was made. Source inspected: https://raw.githubusercontent.com/audacity/audacity/b98c8828e9917641f60b0bc8a0ad6e51f6a87ab0/README.md ; 1541 bytes ; sha256 c84ab5991133706a2899c20539df624ecaa124b7be9d4aff6d2b20986978d121 ; 6 exact pinned excerpts in the draft pin map

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  "usefulness": "- Find where the Audacity 3.x and Audacity 4 build instructions live.\n- Learn which branch to use to submit patches to Audacity 3.x.\n- Check the licence terms for the code and the documentation.",
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    "The README names Audacity 3.x, with 3.7.0 as the tag of its build instructions, and Audacity 4 in development. It gives no system or tool requirements; those are in the BUILDING.md files.\n\n- The master branch is not particularly friendly to new contributors while Audacity 4 is under development.\n- The README does not describe editing features or workflows; it points to the website.\n- Some code carries different licence terms from the overall GPLv3.\n\nThe README states Audacity is open source software licensed GPLv3. Most code files are GPLv2-or-later, with exceptions for third-party libraries in /au3/lib-src and VST3-related code, and documentation is licensed CC-by 3.0 unless otherwise noted. Details are in the licence file, which was not read here. Audio you edit carries its own rights.\n\nWritten from the README text only. Statements are as the README gives them; nothing was built or run and no audio was edited.\nBased on README text only; LICENSE.txt, the BUILDING.md files and the website were not read. No build or run was made.",
    "Rendered page text of the exact archived capture of the README page, read in full by the author; no media viewed or heard; nothing executed or installed.",
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