Simplicity itself, and very nice.
I can't help but visualize a film in my head as I listen to this. I know that it's meant to symbolize the calm feeling of raindrops falling against a windowsill, and the harsher sound in the middle represents the occasional gusts of the storm. And yet somehow, I think it would suit a Christmas-themed flash very well. I even have a scenario in mind. It's too bad I don't know how to use the program. :)
Perhaps I shall learn, some day...