Erufian: I do not have insomnia but I have a busy life that doesn't leave me enough sleep hours (and yes, things like the current insomnia sale are not helping either).
I have used binaural beats and self-hypnosis for falling asleep quickly and deeply and definitely it does work for me.
It takes some "self-training", for them to work best. You relax your muscles, one body part at a time (or one pair at a time, left and right), starting from your feet and moving up "in a slow wave". At the same time you focus on the binaural beats and use that focus to shut out other external distractions and stimuli. You want to use a low volume so that it's easy to sleep without the sound waking you up, but loud enough to mask distraction and to be able to hear the beat. When I'm concentrating correctly I clearly hear something like a "helicopter" sound or like a wave that circles around my head or from left to right (and back), that is the "beat" and a good indication that I'm focusing correctly.
I had to "cycle" binaural beat usage (e.g., use it for a few weeks, then take a break), it doesn't work well for really continuous use.
Something that was occasionally annoying is that after falling asleep with headphones on, at some point I had to half-wake and take them off. I certainly recommend finding comfortable headphones, preferrably open-back, to prevent keeping your ear canals blocked (earbuds) or enclosed for too long (closed-back)
I found lots of good advice and beats at healingbeats.com in the forums. The software I used was sbagen. Never tried i-doser itself but the forum used to have improved versions of the i-doser beats (not anymore, i-doser threatened a lawsuit and got everything removed). Many people in the forums laughed at i-doser and their inefficiently designed beats. In my opinion they are really good at creative writing, the descriptions for the doses are a total blast. And even though the designs may not have been that good, some were going in the right direction.
Actually, the most effective use for me is the opposite - I wrote a script for "after-siesta double coffee" that pumps me up for hours, more than chemical caffeine. It's great in the morning or early afternoon but I wouldn't recommend it past 5 p.m. unless you really need to stay awake for the night.
By the way, a possible reason for poor sleeping is magnesium deficiency. You may want to look into the supplement ZMA (which may help sleep better in some cases but it's not a sleeping pill). On the other hand if you don't have magnesium deficiency it won't really do anything for you
Thanks for your answer.
I'll follow some of your advices.