Are there any methods that help one fall asleep faster?

I generally need music playing. I usually listen to the album Kid A by Radiohead. I listened to it for three or four years every night before bed. Now, I basically can just think about the opening song or two and fall asleep relatively quickly.

The problem for me doesn't happen in the bedroom (hur hur): it's before I get in. I have diagnosed insomnia, and I just don't get tired. I continually stay up and just don't bother going to bed. I also have Ambien, but am extremely worried of becoming addicted or dependent on them (despite claims otherwise by the manufacturer). Another problem with Ambien is that if I don't go to sleep in about an hour or two, instead of getting even sleepier, I just get really stoned, which is a fun feeling, so I end up staying up longer and doing stoned things (listening to music, staring off into the darkness, etc).

Jam it back in, in the dark.