I just had to say that a little round thing produced by a famous company begging with A, that you use to connect to the internet, has some amazing free sound files that are WONDERFUL for getting to sleep. My favourites are the crackling fire one and the ocean sounds. You can get them to turn off after an hour automatically or loop them all night. Sorry if everyone already knows this, but I'm knocked out by it. There's even whale noises! So easy to connect and all info on internet. Hope this post is OK. I think it might really help some people who aren't brilliant at IT but down with the kids ( ie, my son showed me how to do it!).