Well, if you have a laptop, i would recomend getting an external sound card, unless your laptop is new and came with a Soundbalster already. If you have a desktop, your soundcard should do fine. Just hook a male-to-male headphone cord from your headphones out on your cassete player to mic or line-in on your comp. Then you'll need some sort of program to do this. If you have a Creative Sound Card, use its software. Or, Musicmatch also records good. Just make sure you record them to MP3 format, unless you really want good quality at the sacrifice of size, don't do WAV.