Not sure I follow. The Denver post for example has its links in both <link> and <guid> elements see for example
http://feeds.feedburner.com/dp-news-national?format=xml
The problem is that the links are embedded in a CDATA section. So you should write print_version to handle that.
The GUI crashing should be fixed in the next release.
EDIT: Actually, since all the elements in that feed are CDATA escaped, you're going to have to wait for the next release of libprs500 to create a feed for the denver post