I have the i-doser v4.5, the free files, senheiser 151 headset, sony earbuds, creative x-fi, and an extension cord. With all of this I have yet to feel an effect or be affected by it.
These are the things I've tried, and I welcome your ideas/suggestions on helping.
low/high volume.
laying down with eyes covered and no distractions, regulated deep slow breaths.
sober. whiskey. beer. cannabis.
concentrating on the beats.
concentrating on the white noise/static.
concentrating on all the little noises riding the background (sometimes it sounds like music)
counting backward in 1s, 3s, or 7s.
letting my mind wander.
I have tried Trip, Absynthe, Oxy, Sleep With Angels, Insomniac. Like most I tried bigger things first and didn't work. Read on the forums that trip is recommended to begin with as it is generally the most widely "felt." I have had a moment with the oxy where my head a brief tingling sensation, but as soon as I felt it, thought about it, it disappeared.
My roommate feels the oxy every time since the first time he used it for a toothache. I hate him.