Looking for some ambient weather sounds, I stumbled upon the web site: www.ambient-mixer.com
You can mix your own stuff, or browse the online projects for a suitable mix.
It features 8 channels with volume control, and even settings for a random feature, which allows
you to define how many times you want a specific audio file to play during f. ex. a 10 minute mix.
Tags: Ambient, Audio, Do It Yourself (DIY), Music