Under Linux, I have been running 3 or more windows simultaneously. Try launching RP manually (rather than via a link), then give it the URL of the stream.
Cool -- I hadn't even thought to put Real on the Linux boxes. I've banned it from the house -- but put it on one W2k machine for the Bagcams.
I've got a good X-for-W2k server -- I'll be able to run several of them on the Win box (with the 21" monitor :-).
I'm so anal about things like this, I'll probably spend half of tomorrow tuning on it :-)
Thanks for the tip, though -- I wish I'd thought of it three weeks ago; it just didn't dawn on me that Real had a Linux client. I use Linux for "real stuff," and Windows for all the fancy graphical stuff.