I have come upon a great website that has some really nice meditation sounds to listen to.
What I really like about it is that they are 20 minutes long, which I am finding to be a perfect length of time for me to meditate. Having the meditation sounds coming to a peaceful end is so much nicer than being jarred back to reality with an alarm. ;-)
I recommend checking out the site www.meditationroom.org for nature sounds and binaural beats.