We DO need to remember that there are 2 issues here and they are really not related. Protecting PG by not posting copyrighted material, ok. We get that.
The other side of the sword contains remembering that if we would all do a version of "Wave" (since that was at the start of the thread) we are paying homage to Antonio Carlos Jobim, and to have the song there to learn it means we all have a copy of it that we purchased. (In my opinion, one of the finest pieces of music ever written. The "perkiness" of the way it flows.... you can close your eyes and see that girl from Ipanema walking down the beach in her long, flowing white gown.)
I am the type who would actually do something like this and compile the results on a CD and send it to them just so they know their original work was appreciated, given that imitation is the highest form of flattery, and let them hear how other musicians interpret their work. Of course I am 18 years too late for Jobim, but....