Xela created a torrent on one of his threads; it shouldn't be too hard to find. Also, the man who worked on and developed EX, THEFUTURE, is long gone and has shown no sign of ever returning. He was not kind enough to give us his source code before he left so, frankly, you're on your own, sorry to say. This is something that has long bedeviled this community in general, and one that we have no means of solving.
Sorry about this doomsaying, but my advice would be to enjoy EX as much as you can, and than transfer your allegiance to the newly hatched PP&C mod version, which is still growing and changing, with new content posted semifrequently.
Yours,
HeWhoCumsByNight