1996 Chrysler Cirrus severe transmission fluid leak can't f

I have a 1996 chrysler cirrus 4 cylinder automatic that I just bought from this guy, he said it had a small tranny fluid leak occasionally well we towed the car home. After replacing the battery I drove it 4 miles when it started smoking bad all the fluid was gone, I bought more tranny fluid and drove it again it smoked again after a few miles. You could actually see the fluid on the road a consistant stream from my driveway and around the block. I cannot see where the leak is any suggestions I live in mechanicville ny thanks michelle