> Using copyrighted materials in test code is fair use and a well established practice: https://en.wikipedia.org/wiki/Lenna

What kind of nonsense is that? Playboy did fight people for using it, the eventually let it go because it was one image that wasn't particularly important them. It's literally right there in the article you linked...

And I assume you forgot to link to this other program but again, not exactly a real argument.

RIAA went after them on the use of that link, if other projects (of which dozens exist by the way) didn't slip up like that and are still here, it only makes it clearer what the problem was