The Library of Congress in coorperation with Sony, makes thousands of pre-1925 music recordings available for listening on line free of charge. If you would like to listen to music you ancestors enjoyed between 1901 and 1925, this may be your site. Here is more information on the project from the LOC website:
"The Library of Congress presents the National Jukebox, which makes historical sound recordings available to the public free of charge. Recordings in the Jukebox were issued on record labels now owned by Sony Music Entertainment, which has granted the Library of Congress a gratis license to stream acoustical recordings.
"The Jukebox includes more than 10,000 recordings made by the Victor Talking Machine Company between 1901 and 1925. Jukebox content will be increased regularly."
Check it out at http://www.loc.gov/jukebox/