Images
http://search.creativecommons.org/
www.photosforclass.com
http://www.pics4learning.com
http://copyrightfriendly.wikispaces.com/
http://www.edupic.net
http://commons.wikimedia.org/wiki/Main_Page
http://classroomclipart.com/
Smithsonian Images
Library of Congress Image Catalog
http://photopin.com/
Music
www.youtube.com/audiolibrary/music
http://www.soundzabound.com/sabcs?terms=1152
http://www.bensound.com/