BTW, I throughly approve of double negatives and the use of the word "ain't" as well. As you may have heard, double negatives are archaic but not invalid English usage. Before the advent of a common understanding of the principles of logic the double negative reinforced a negative intention rather than the negation of a negative. Who's to say that a usage common in 17th and 18th century England is inherently invalid just because it's old, particularly on a folk music forum such as this? Southern English, particularly in areas where there was less contact with Northern influences, merely retains the older form as it does the older pronouciations.

And of course we all know that "ain't" is still used by the English Royal family even today. I've heard Prince Charles use it. Given all the other English uses we Southerns have held on to, it's not surprising some of us who had less contact with the outside world continued this usage either, now is it?