Favorite Starting Places

Music - http://freeplaymusic.com/ and 

Images - http://flickrcc.bluemountains.net/

Sound Effects - http://www.sounddogs.com/

Other Resources

Archive.org - http://www.archive.org/ Live Music, Audio, Moving Images

Jamendo - http://www.jamendo.com/ Music

MorgueFile - http://morguefile.com/ Images