@Someone talking sense
Not everyone is aware, but there is such an agreement for "a few quid" to copy copyrighted works at U.S. universities, at least as it pertains to the photocopy problem. If a journal or any other publication is part of said agreement, the photocopy center can provide copies of articles for distribution to students, for classes or individual research.
The problem with the RIAA and others seems to be that they know people will listen to that MP3 forever. How would such an agreement enrich them? Come to think of it, haven't they tried to license every copy of a song when you've bought the CD? They don't want you to put it on your your own iWhatever unless you pay again for each and every device you own or will own. Then the possibility of someone sharing one of those files frightens their accountants.
So, fear from the industry people is what is driving the guilty-until-driven-broke idea of pursuing someone with a few songs is all about. Yes, a simple fee system for those who want to share would be too easy.