In years past, there were only a fews ways to lose your music: accidentally cracking a CD, for instance, or having the stereo eat your cassette tape. Even then, you wouldn't lose your entire collection. Nowadays, though, your carefully obtained catalog of digital music files can be wiped by just one computer failure. Enter Tune Keeper. Plug one of the portable storage devices into your computer's USB drive, and you'll be prompted to "Start Backup." As many as 32 gigabytes' worth of music can be copied onto one device, and it will keep you apprised of how much space is left. Afterward, you can rest easy knowing your music is stored away, making it easy to transfer songs to a new computer or replace original files when they go missing.