How come Musescore 4 isn’t a GPL violation, and is their mixed-proprietary model a long-term threat to other GPL software?

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musescore music-notation CPP musicxml Qt

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  • MuseScore

    MuseScore is an open source and free music notation software. For support, contribution, bug reports, visit MuseScore.org. Fork and make pull requests!

    • I looked into the source, and from my perspective it looks like the only purpose of the dll API (it's inside libhandler.h) is to avoid releasing the source. There is only ONE implementation, the dll is ONLY used by Muse Score, and there is also no documentation on this API... The lib, MuseSamplerCoreLib.dll, is installed to Windows/System32. The sample format is proprietary I guess, but internally uses the open source opus codec (so sample data can be extracted by just using opusdec.exe from opus-codec.org) Here is some feedback from the team on the issue: https://github.com/musescore/MuseScore/issues/15706 https://musescore.org/en/node/340466

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