radio downloads through real player falling into itunes

[Justin Harford]

Hi all

I have a problem
I have recently discovered radio through the realplayer browser and a  
website called magnatune.com.  I have been listening to a bunch of  
stuff on that sight through the real player browser.  Recently I  
noticed that it all had been thrown into my itunes music library.  I  
spent nearly 30 minutes yesterday trying to clear it all out.  How do  
I make it so that the downloads from the real player browser don't  
end up in my itunes library?

thanks

Justin