You've been ripping CDs for years, but what about those dusty cassette tapes in your attic and all that bargain-basement vinyl at used book sales? With Audacity, you can capture those vintage tunes, clean up their sound, and carry them around on your MP3 player.
Audacity is a powerful free cross-platform audio editor. It includes tools such as noise removal filters and automatic track splitting that can speed up the process of turning your antique audio into shiny new MP3s or Oggs.
All you need to begin, besides a recent download of Audacity, is a computer with a sound card -- use the "line in" port if you have one -- and your tape deck or turntable.