You might try finding them on the http://rpm.pbone.net
website. If you click on the "Advanced Search" button, you can then clear all the checkmarks and then check FC 6 and FC Other. That helps narrow the search to packages made for your distro.
The dependencies are also listed with links to the packages that supply them.
One possibility is if you have
liblualib50.so.6.0 instead. In that case, you could try linking from liblualib50.so.5.0 -> liblualib50.so.6.0.