SpudR I think you are incorrect. This sort of data is freely available from MANY sources. It is usually 30 minutes out of date or so, but there are tons of places to find up to date stock data online. The problem is that RSS feeds are generally used to syndicate news stories, and the fact that AMR just went from 9.98 to 9.75 is not really news worthy. It's hard to find a feed like this not because it's "privileged information" but because it's just not what RSS feeds are generally used for.
You may need to find an RSS feed that doesn't have links. I don't have one at the moment, but know that there is a difference between RSS 1.0 and RSS 2.0 (I believe).