Here's the prior art for an ergonomic personal media device with nicely rounded corners.
https://s-media-cache-ak0.pinimg.com/564x/a1/34/84/a13484ad1...
https://s-media-cache-ak0.pinimg.com/564x/a1/34/84/a13484ad1...
Rounded rectangles are at least as old as history itself.