> If you don't mind reflashing a player's firmware and sometimes a bit of hacking, Rockbox supports many (mostly old, unfortunately) players, but by being Open

> If you don't mind reflashing a player's firmware and sometimes a bit of hacking, Rockbox supports many (mostly old, unfortunately) players, but by being Open Source and not tied to any proprietary cloud or similar service, it doesn't prevent the user from moving and/or sharing their music files, since the players essentially become USB drives without any restrictions. > https://www.rockbox.org/ https://www.rockbox.org/ > I installed it on both my Sansa Clip Zip players, and kept it until the day the last one of them died. Unfortunately I couldn't find a new device for installing it and had to settle for a cheap player with surprisingly good hardware, but also the crappiest firmware I have ever seen. I still have some Sansa player with rockbox, used it for podcast and helped developing such functionality (podcasts/player support) in one media player app. But then I switched to Spotify, and lost interest in helping.