I couldn't second that more. Rockbox is a wonderful 100% FOSS operating system for music players, and they're working hard to port it to new devices, almost alw

I couldn't second that more. Rockbox is a wonderful 100% FOSS operating system for music players, and they're working hard to port it to new devices, almost always with zero help from manufacturers. HNers, please consider donating to the project, and/or if you have a old player collecting dust somewhere, also consider donating it to them so they'll have more hardware available for testing; when working with undocumented platforms the risk of bricking them is high, so it would help a lot.