No it wouldn't. A "legitimate" Napster by definition would have to be a Napster that charges. Unless we are talking about Allofmp3 level pricing, which we both know would never happen, mp3 file sharing isn't going anywhere.

The machine running the peer guardian is an XP machine. It is sniffing traffic on the local network and filtering out all the results that don't originate from the vista machine. He is running remote desktop from the Vista machine to the XP machine (the one running Peer Guardian). He probably did this because of the issues that software has with Vista, or possible because he feels that Vista would hide this information from programs running locally.