UniSky 1.2.7 Problem, can someone help ?

Hi so i got UniSky and i have unity 4 wehn i open up example that is given in Unisky there is no sound ? How can i fix this

Is there better tool that i can use for day & night cycle/ weather (wind,rain,storm)

Have you got an audio listener on your main camera?

Yes i do have I imported exmple that came in package but there is no sound when i press play game.

Im using Windows 7 64x