UCSB Streaming Ragtime
http://www.cylinders.library.ucsb.edu/cakewalks.php

Scott Joplin International Ragtime Foundation (annual ragtime festival)
http://www.scottjoplin.org

The Ragtime Ephemeralist
http://home.earthlink.net/~ephemeralist/

The National Jukebox
Historical Recordings from the Library of Congress
http://www.loc.gov/jukebox