Thanks for the info Lajocar, I checked it out.
It wasn't promising and kind of depressing

.
The list of songs in the public domain is not long, relatively speaking, and the songs are very very dated.
So how do performers sing in local clubs...or on street corners...or how do the scouts sing their songs at summer camp...or even at campfires...without everybody violating copyright?
How do other sites post old songs that are not on the list?
Is the whole world one big copyright violation? LOL...it seems that way after reading through this site.
I wonder if I should just go ahead and put up some of the older songs we usually sing and if I have any problems I can just take them down. Unless I am putting up something new and recent...I don't expect to have any problems.