Well if I remember well there was a buddy of mine that had one of this NET mini disc palyers, and the difference between that model and the older ones was that he was able to record music from his PC to the player via USB by just drag and droping the files using a program supplied by Sony. The older md players you had to select the audio output to be the player itself, so if you wanted to record say 100 songs you would have to wait for 100 songs to finish (this is with the older models), with the NET ones the recording is done mush faster and with drag and droping which is as simple as it gets. Hope this helps

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