Audio ArchiveThis library contains recordings ranging from alternative news programming, to Grateful Dead concerts, to Old Time Radio and most are downloadable, but all materials on the site are free to use/share.
BandcampMusic is uploaded to Bandcamp with a Creative Commons license.
CCmixterA community music remixing site featuring remixes and samples licensed under Creative Commons licenses. Over 38,000 (and growing) pieces of music are available.
Free Music ArchiveThe FMA is a collection of high-quality, legal audio material. All material on the site contains a Creative Commons license so is available to use for free.
Public Domain ProjectThousands of audio, image, and video files in the public domain from the collection of the Pond5 stock footage company.
LibriVoxFree public domain audiobooks recorded and made public by volunteers.
Open Videos
FedflixMovies from the United States Government, from training films to history and national parks.
Library of Congress WebcastsWebcasts from the Library of Congress covering Biography, History, Culture, Performing Arts, Education, Government, Poetry, Literature, Religion, Science, and Technology.
Moving Image Internet ArchiveOver 1.5 million digitized videos and clips, including cartoons, commercials and classic films, many public domain or available via Creative Commons license.
PBS VideoPBS now offers some full-length programs, and many clips of programs that you can utilize in your courses. Browse by program, topic, or search for a specific episode.
Prelinger ArchivesPrelinger Archives holds approximately 11,000 digitized videos, primarily home movies and amateur films. Its goal is to collect, preserve, and facilitate access to films of historic significance that haven't been collected elsewhere. There is free access to many (but not all) films from the collection on the Internet Archive site.
TED TalksSearch the TED Talks library of videos filmed at TED conferences, TEDx events, and other events. Try narrowing your search to TED-Ed and view animated video lessons targeted to educators to use for customizing lessons.
Vimeo Creative CommonsBrowse videos with a Creative Commons license. The site has a clear explanation of the different licenses and how you can or cannot use the videos.