If you have an old iPod and there are music files that haven't been transferred from computer to computer throughout the years, it is time to back up that library as soon as you can. If you use a Mac, there's an app called Senuti (iTunes backward!) that can help with the process. For Windows users, try YamiPod. At the very least, back up the iPod onto your computer with iTunes via the "Back Up Now" function. Don't lose those years of music tracks!