Soundsnap sounds effects
I’ve bumped into SoundSnap while surfing. You Ambient fans are going to like this one !
Soundsnap is the best platform to find and share free sound effects and loops- legally. It is a collection of original sounds made or recorded by its users, and not songs or sound FX found on commercial libraries or sample CD’s.
The website interface is very clear, and you can listen to loops and sounds before downloading them. The sounds are available in mp3, wav and aiff formats.