Free Sound Samples & Songs: Archive.org

Within the Free Sound Database, you'll find a real gem: Archive.org. Not only can you see how the internet looked in its beginning stages, discover websites now forever diminished, and download all sorts of free music (recorded or performed live), but there are many archived sounds and videos that are no longer copyrighted. Since many are in the public domain, you can now use some of them in your own music productions. As described by the website:
"The Internet Archive, a 501(c)(3) non-profit, is building a digital library of Internet sites and other cultural artifacts in digital form. Like a paper library, we provide free access to researchers, historians, scholars, and the general public."