The iPod has become more than a simple music player. It now plays video, it features games, and — in the case of the iPod touch — it runs third-party applications. It’s basically a pocket computer. And like any other computer, it can be tinkered with to do more than it was originally programmed to do. While the iPhone brought attention to the world of “jailbreaking” devices, there’s a thriving community of technology enthusiasts happily modifying iPods, giving them new functions, custom skins and unofficial applications.