With Rockbox's free firmware the iRiver H10 is the perfect iPod replacement. Unrestricted, portable, and GNU/Linux friendly. Hardly bigger than a deck of cards, yet it still has space for as many as 7,000 songs. Complying with the USB mass storage device standard it's easy to setup. Just plug it in! The built-in battery delivers up to 16 hours of non-stop music between charges.