How to boost the Apple iPod's battery life.

With an iPod in hand, you’re ready to jump aboard a cross-country flight. Yet you’re stuck in the cheap seats, so you don’t have a power outlet, as the passengers at the front of the plane do. How can you keep your iPod continuously pumping out tunes, or help it last through enough video that you can avoid the in-flight movie? Charge ahead with these power-saving and battery-enhancement tips.