For anyone looking for a fast, easy way to transfer pictues, videos, documents, music, etc. between their Linux Mint machine and their Kindle, I would suggest a 99-cent app from Amazon called WiFi File Explorer Pro. It gets installed on the Kindle and that's all there is to it...just follow the prompts! The only stipulation is that both devices must be connected via the same network. I'm a Linux noobie and only slightly computer literate, and this was a piece of cake...try it!!