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Amazon is making it impossible to remove the DRM from Kindle Books
(goodereader.com)
This is a most excellent place for technology news and articles.
I used this guide from a thread on Reddit. It relies on Calibre and a set of plugins https://www.reddit.com/r/Calibre/comments/1c2ryfz/2024_guide_to_dedrm_kindle_books/
Awesome, thanks!