National Jukebox: public domain music archive from the Library of Congress

From the Department-of-Things-That-Will-Soon-Be-Impossible, Alan writes, "A selection of historical recordings, from old Victrolas to 78 RPM records, is now available free from the National Jukebox. Put online by the Library of Congress this trove of public domain material wouldn't be possible if copyright landgrabbers had gotten everything they wanted. And with less and less material entering the public domain the jukebox's contents will probably stay static for at least our lifetimes."

National Jukebox (Thanks, Alan!)