Using a male-to-male cable, 1 end goes into the headphone jack on the mini disk recorder, the other end goes into the computer's mic input.

Open up your computer's sound recorder (I use Cool Edit software).

Start the sound recorder and start playing the minidisk, to record what's on the minidisk to your computer's hard drive.

At end, stop both and save the file on the sound recorder.

You can then convert the file to whatever format you want. (My software saves it in wav format, which I then convert to mp3 or CD).

I think there was a thread about this awhile back, but it's quicker to just say it again... Good luck!