European Copyrights Expiring on Recordings From 1950's
Shame on America--50 years is more than enough.
Yes that does fall under fair use. I think it's considered ok as long as a complete work isn't used. I think there are some issues with profs coping material for courses. Generally you the press is free to quote things too, even if they're copyrighted. I think I've heard that parody laws allow you to use up to 90% of a movie. There are a bunch of fun things that fall under fair use.
The original point of copyright was to prevent one party from profitting off replicating some other parties ideas. Selling a book without giving the author money for it was called piracy. Giving it away or reading it out loud wasn't. Filesharing isn't piracy under this definition.