Ajax -> find_feed -> get RSS-URL

[Peter Schmitz]

Hi,

I'm playing with http://code.google.com/apis/ajax/playground/#find_feed

Question: How can I get the RSS-URL which delivers the feed in response of the query?

Example:
Query site would bei "cnn.com"
Feed result would be based on "http://rss.cnn.com/rss/edition.rss"

How can I extract this "http://rss.cnn.com/rss/edition.rss"?

regards
Peter