While not a solution per se, an alternative exists. If the license for current works are unacceptable, start celebrating other works! Notably, works with a Creative Commons license.
Consequently others can ignore laws and licenses clearly out of line with the reality around them. I often find that to be far more effective in living life than seeking squeaky clean legal alternatives.
We really do only have one go around. I'll buy all the knock-off Mickey Mouse crap I want.
I think that both of these are important, and symbiotic tactics. Officially support the artists who are doing the right thing, and rip off the ones who aren't.
There is a HUGE difference between "buying knock offs" and copying something that should be in public ___domain. For one thing knockoffs tend to be cheap and poor quality. But this isn't just about "copying" it is also about using, and remaking and recreating. If the 1978 law was still in effect I could create a cat in the hat game or movie, without having to pay licensing fees.
Some Creative Commons cartoons http://www.seosmarty.com/15-cartoonists-that-allow-using-the...
Creative Commons Music at Jamendo (see the FAQ http://www.jamendo.com/en/faq)
edit: 'per-say' to 'per se' (thx ansimionescu)