The software rarely makes a difference in the quality of the sound.

The important thing is the way you connect your minidisc output to your computer. Is it a digital or analog connection? Digital is better. If it's analog (via the line in on your soundcard) your soundcard will affect the sound a lot.

You'll get the best help at www.taperssection.com and maybe even find someone to do it for you if you dont' have digi capabilities.