They were all free when I wrote it. That link for Real Producer doesn't work now, I've just found. I think the comoany wants peopel to buy the newer versions. But this link should do it - http://www.realnetworks.com/products/producer/basic.html

Generally if you look around there's a free basic version of most things you need, but somretimes, in small print, because they'd like you to buy the one with bells on it, which often aren't particularly usreful bells.

(I can't edit that page I wrote for the time being, because I'm having temporary problems loading stuff to that site.)