H GDad,

There are a few audio and video stream recorders out there but they are more or less fiddly to use and I don't know if they would be 100% successful with a Skype stream (I expect they would).

I'd recommend, for ease of use, having a look here

http://www.skypecap.com/

Because it is designed to do exactly the job you need.

RealPlayer download (and any other downloader) won't be able to intercept a true, live stream. They can only capture a discrete video file and even then they can have unpredictable results especiially if a video file is streamed and not cached on the receiving PC.