To an excellent rant on fair use and intellectual property by Dave Freer.
I've been paid for the goods you bought. They're YOURS to do with as you please, except reproduce to sell. To turf, resell, or leave to your grandkids for all I care. I am DELIGHTED if you want to keep them, and have a copy on your PC and palm-pilot. I do NOT expect to extort more money from anyone for fair use. And I sure as @#G%ing steaming puss-laden shit am not prepared to be bought off for 10% (or any percentage!) so that some rotten corporate scumbag thief can rip you off and claim they - taking 90% of the income - did it for ME. They're doing it for their OWN greed: straight. NOT THE ARTISTS. If they can get away with cheating the artist, the evidence — tons of it — says they will.