Nature ambient sounds
wetwilly.fr
wetwilly.fr
If you like this site you should also check out http://www.calm.com, which in addition to various ambient and nature sound/videos has guided meditation sessions.
This website allows you to customize every noise to your liking and the selection of soundscapes is HUGE.
It hasn't moved me away from http://rain.today .
[0] - http://www.noisli.com/