You have to check out this cool website: SoundSleeping.com.
I am really in love with this website. In fact, as I write this, I am listening to the sounds of thunder, rain, and the ocean all created by me with what is provided on this website. They are promoting “Sounds to Promote Sleep & Relaxation”. They offer tips for sound sleep, MP3 downloads, and relaxing music with nature slideshows. And it’s fun.
I am betting that you will love this one too. I encourage you to explore this wonderful website.