Is it possible to specifiy a directory in the libraries paths and have IDEA to include all jars in that folder? I do not think you can now, but that would be a really nice feature for IDEA. it treats a lib folder much the same way it would treat a src folder.
We are constantly rebuilding versions of libraries, and appending the date to the base name of the library for easy version identification. This makes for a tiresome manual process to set up the paths for libraries everytime we get a new daily build of our libraries.