I made a ebook reader
   (here) [1]http://code.google.com/p/bookjar/downloads/list
   and i'd like to search and download Gutenberg books. I already have a
   searcher prototype using LuceneSail a library that uses Lucene to index
   rdf documents and only indexing what i want from the catalog.rdf.zip.
   Now i'd like to know how from the url inside the catalog i can fetch
   the book itself, and what are the variants for the formats.
   A example query result:
   author: Shakespeare, William, 1564-1616
   url: [2]http://www.gutenberg.org/feeds/catalog.rdf#etext1802
   title: King Henry VIII
   So, i like to know how from the etext1802 number can i get a working
   url to download the book, and how to construct variants for each
   format.
   Thank you in advance.

References

   1. http://code.google.com/p/bookjar/downloads/list
   2. http://www.gutenberg.org/feeds/catalog.rdf#etext1802