Here is a website you can use to relax with… it has calm and relaxing imagery as well as soothing sounds… whether it be of thunderstorms, rainfall or a variety of relaxing music http://www.calm.com/

Do be sure to experiment with the buttons at the bottom and the side on the website to have different music, imagery, a timer etc.

The page is freely accessible (and there is currently a free app if you would like it on your mobile device).

Let me know what you think of it in the comments below!