I'm glad the ResourceManager provides the functionality you need. If you have questions, ideas or other feedback, don't hesitate to inform me. I would really appreciate it, since only few people seem to use Thor's Resources module so far. And maybe I will slightly change it in the future, so ideas are always welcome
By the way, I recommend to use the SVN version instead of Thor 1.0. It is up-to-date with a recent SFML 2 revision, contains more features and some bugs have been fixed.