Usually if a file hasn't been rated in Bitzi it's probably a fake, especially for movies. Music files don't get rated much because of their relatively small size. There is an outside chance that the file is so new that noone has rated it yet, but that's unlikely.
You can try going to the
Bitzi website and search for files there and use the magnet link to start the d/load in LW. Click the link that says "Magnet (Gnutella, Kazaa, Direct Connect, and others)". Then right click the file(in LW) and search for more sources. Sometimes you luck out and can find files that way. Try the tips in the links birdy left. Hope this helps.