I've had a go and it looks legit. The sheep sounds cracked me up. Only a Kiwi might find listening to them relaxing!
Sometimes it is hard to read if surrounding environment is noisy. In such situations it helps to use earphones and listen to some kind of white noise. It is known that sounds of nature work better as white noise comparing to music because of its two factors:
* lyrics which tend to distract thoughts
* varying volume of music which makes white noise either too quiet or too loud.
So I have made a free tool http://www.naturesoundsfor.me with which you can create a composition of nature sounds, save it in WAV file and listen to it via portable audio player for example when reading in public transport or while waiting in a doctor's office.
Give it a burl, or not :)