Bassdude.....convert them to .wav files, and then convert to Mp3.
Myself and Hog had a discussion about this a year ago or so. I was doing all my cassettes, and then started working on my LP's. Unfortunately, I have gotten nowhere on my LP's since I've been gone for about 3 months.
If you are interested in doing it that way, I can talk you through it.....I'll also try to find that thread.