Jason Coon put together an excellent tutorial on controlling BlinkyTile with Arduino and the FastLED library:
This tutorial will guide you through connecting a BlinkyTile sculpture (I made the standard dodecahedron) to a microcontroller. The same basic instructions will apply to just about any microcontroller, but we’ll be using an Arduino Uno. I’ve also tested with a Teensy 3.1.
He also used this technique to fit a controller, battery, and accelerometer inside a ball. Pretty sweet!
From the Blinkinlabs Store:
BlinkyTile kits are now in stock! Get them in the Blinkinlabs Store!