rpm is a pain in the ass, try kanotix (kanotix.com), based on debian which is very easy to install programs with synaptic (in debian-based systems you would do "apt-get install amule" and all dependencies are automatically installed along with the program, and voilá, it works.).
Then go the linux forum, and see:
http://forum.amule.org/thread.php?threadid=5776&sid=&threadview=0&hilight=&hilightuser=0&page=1This post gives you a way to get the most recent cvs version of amule, I recommend that.
Linux is not as hard as you're thinking, it depends on distributions, some are better at it than others, try out a bit before settling on one. I'm using ubuntu now, but I'm going to change to kanotix, because kanotix is 100 % debian, only user-friendly, and that is exactly what I want.
Dan