MUSICMATCH does it too. I've never done it myself, but it's pretty straightforward. You select the line-in as the source for the recorder and hit record. You can even tell it to do auto-detect of gaps so that it will generate separate mp3s for each track.
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__________________ Scott MKIIa 10GB - 2.0b11 w/Hijack MKIIa 60GB - 2.0 final w/Hijack