How do you record FM radio broadcasts to cd / Mp3?

I'd like to archive some FM radio broadcasts on cd in Mp3 format. Anyone with any suggestions on how to accomplish this feat? I'd be able to get 10 hours of programming on 1 cd.
Id you computer has line in, then use something like eac (exact audio copy) to record .wav files. Then use lame to process the files to .mp3. I do this all the time for my dad and the results are not too bad.