While the legal and technical differences between trying to steal someone's song and playing it for yourselves or others may be nonexistent, the reality is much different.

If Stephen Foster were alive today, I don't think he'd be b*tching or suing anyone for singing "My Old Kentucky Home" on youtube.

People need to lay off trying to scare people out of playing covers for youtube. I've watched hundreds of them and I've never heard of anyone getting sued for posting one.