Howdy,
I assume that the public domain site you are looking for is at http://ne1.bright.net/pdinfo/pdm2/ with lots of new information about 1997's house bill to extend copyrights to 95 years (and allow nothing new to fall into the public domain for 20 years), and the list of about 3000 public domain songs, and other goodies.
Allinkausay, Bill