Normally $29.99, Eastbay has the popular Nike + iPod Sport Kit (model MA365LL/A) for just $19.99. Plus, enter coupon code LKS4AFD and the price drops 10% off to $17.99. The kit lets you listen to your tunes while the iPod Nano tracks your running progress (and smartly reports it back to you via your headphones) through a sensor in your shoe (comes included). Also, the Nike + iPod Sport Kit with the Armband is just $22.49 after the coupon, down from $58. Shipping adds $6.99.