|Wikimedia Commons: Sounds
Wikimedia Commons is a media file repository making available public domain and freely-licensed educational media content including audio clips. This category has the following 24 subcategories including sound effects, music, and much more.
Open Directory Project: Sound Effects
Includes to selected websites offering sound effects - Business, Arts and Entertainment, Media Production, sound loops and more.
Brainy Betty: Free Sound Clips and Music for Presentations!
Access to hundreds of music & sound files: Blues, 70s Pop, Mountain Meadow, Happy Latin Flair, Happy Upbeat, Manic Piano, Swing, HiTech,etc. Download Items marked 100% free for personal or business or educational use. You can share with others as long as you give (not sell) it to them.
SoundSnap provides audio designers and musicians a platform to share their work. Includes animals, comic & film fx, human, music loops, nature,sci-fi, sound art, and sports. All content on the site may be freely used, but to access some features of the website you may have to create an account.