The device shown above is actually a MP3 player…and kinda makes the iPod Shuffle look big. This ridiculously small device called Micro Sport MP3 player, has a decent 4GB memory and even a rechargeable battery! “Loading music is incredibly easy. Simply plug the Micro Sport into the USB port of your computer. It mounts like a USB thumb drive, and you simply copy over any MP3 files you want to play.”
ThinkGeek has this available in the US. But since it has been imported directly from Japan, the device has all the instructions in Japanese.