The 4G iPod nano features an optional spoken interface to help with audio navigation, and the new hardware includes blind-friendly features like the "Shake to shuffle" function (we were wondering who that was for!). Apple's new mic-integrated headphones provide tactile controls on the cable, and can also be used to receive vocal commands. But most importantly, Apple has promised in this agreement to flesh out its compatibility and make iTunes 8 and iTunes U 100% accessible for the blind by the end of the year, as well as donating $250,000 to the Massachusetts Commission for the Blind.