My sleep aid is this..
http://www.amazon.com/Theta-Meditat...sr_1_2?s=dmusic&ie=UTF8&qid=1314995531&sr=1-2
Theta Meditation System - It's a CD - I like the CD called Renewal and the 2nd song I think (I don't like the other one because it sounds kind of sad.)
The song I like starts out like something out of 2001: A Space Oddyssey and changes to a music (with flute) that the hobbits might enjoy listening to (or dancing to) and then goes back and forth between the space type of music and light flute music.
This music was supposedly made as an attempt to put the listerner in Theta brain wave. They actually have Delta wave CD's (which we get into when we are having sleepless dreams) specifically made, I think, as a sleep aid, but I don't have them.
I don't know if any of you are meditators (I used to mediate, but I haven't in any formal way for years), but this CD gets you in that trace like meditative state without any effort. This music makes my mind - brain - numb, so to speak, and really really relaxed. If you are having a hard time sleeping because your mind is racing or you keep on thinking about stuff that is preventing you to fall asleep, this CD may do the trick for you. It probably won't work if you took a long nap in the afternoon, though, but I don't know.
This isn't relating to sleep at all, but a few years ago, a friend of mine dragged me to this drumming thing where everyone sat around this room with eyes closed while this woman beat on this hand held drum (I'm sure there is a name for this type of drum, but I cannot even remember what the drum looked like at this point.) and I remember it didn't even take me one minute to get into this trace like meditative zone (and I wasn't even trying to - it's all the affect of this repetitive sound/vibration that caused me to get into this state). (Just so you know, it takes some or a lot - of practice to be able to get to this state on your own without external stimuli.) This CD music does the same thing as the drum beating did (although it takes longer to get to the brain numbing zone), and this zone is very sleep friendly.