If you've got a SoundBlaster Audigy 2 you could use the DVD audio player to play the song while you simultaneously record it to a wav file (using the mixer to record "What U Hear"). Once it's in wav format you can convert it to MP3.
If you don't have a SB Audigy, you can record the songs to cassette, then plug the cassette player into the Line In jacks on the sound card and again record to wav format and convert. For maximum fidelity, you can record the music on a Hi-Fi VCR as the interim step.
I have to tell you though, taking a hi-res DVD-Audio disk and converting to MP3 is like watching a large screen TV through the bottom of a beer glass.