I think we in the U.S. are pretty safe. Most of your banned songs I have never heard of, let alone heard. One of my favorite quotes about old-time music comes from a preface by Mike Seeger to a book of old songs. Mike quoted Almeda Riddle's grandmother as saying that she loved to listen to the Carter family on the radio, but she couldn't stand what they did to the old songs. I certainly wouldn't want to ban the Carter family versions, but I wouldn't mind a rule that required anyone singing one of them to sing one other non-Carter-family version. For example, there must be 500 versions of John Hardy, but I can nearly guarantee you that even in West Virginia, where Hardy was hanged,wherever you go you will hear note for note about a desperate little man who carried two guns every day. No gambling takes place of course, because on the radio you could sing about murder and mayhem, but not gambling.