I have about 300 cassettes. I'm trying to find a way to rip them into .mp3 format. I have close to 200 CDs that I have ripped, plus more I've purchased from Napster...over 7,000 .mp3s in all. I've a little .mp3 player (an RCA Lyra, 128mb built in memory plus a 128mb add-on card) at Wal-mart that I can jack into a cassette-shaped adaptor that fits into my car stereo. I love the .mp3 format because you can do so much more with it.