Well, Rockbox is intended primarily for people somewhat technically adept so far. It's not polished enough for end users, and there's no official installer yet. When you use it there _will_ be bugs. Most aren't major, and once you get it set up right, it's perfectly usable, but some degree of proficiency is expected on the end of the user, because really it's for developers and people who are willing to serve as testers, for the most part.