The more time I have spent listening to binaurals, the more I have noticed that posture indeed does make a big difference in the outcome, regardless of the type of product you are using (i.e. holosync vs. a concentration tape or whatever.)
It is ideal to assume a traditional meditative posture while listening to binaurals, i.e. on a comfortable mat or carpet, with a firm pillow supporting your lower back. Spine straight, and head tilted slightly forward.
(Technically, the spine is not perfectly straight; as I said, see a book or a course for exactly how the posture is supposed to be. But the spine stays relatively straight compared to the way most people are accustomed to sitting.)
The reason is that this posture allows the energy between different centers in your anatomy to flow with the least amount of obstruction, which is a great aid to any sort of "processing" or releasing work. If you practice listening to binaurals in this way for a while you will begin to feel this.
One of those "learn to meditate" kits might be advisable for the specifics.
Most of what you will be doing in the first few weeks of any "learn to meditate" course is simply get comfortable with sitting in the proper position for thirty minutes or so; until then all the "breath counting" or witnessing or whatever is merely "gold to stop the flow of a child's tears." (i.e., window dressing)
I do think, however, that using a program like holosync can be a good set of training wheels, and can make it easier to progress through the intial stages and the interupting thoughts and uncomfortable sensations that get in the way.
The better your diet and your overall state of health, the more quickly you will be able to master the basics.
I have learned it from a variety of sources and it is king of an intuitive thing. After a few moments of sitting like this I usually start to feel grounded in my hara, or lower dan-tien as Chunyi-Lin would say.
Then it seems to expand and fill my lower body almost completely.
After a few minutes the posture becomes effortless and natural, and it is easy to be perfectly upright and totally relaxed. I can start to feel my whole frontal line as a column of circulating energy... I feel grounded and anchored to the earth and at the same time connected to a point infinitely above my head. From there the meditation becomes a process of comfortably maintaining the posture while allowing mind to clear and remain clear. There are sensations of releasing obstructions along my frontal line, while being anchored in the point below the navel.
...When I am really "into it", it is like I am not there, although I am at the same time, completely aware, even more aware than usual, of the present moment and of every sensation that arises.
Doing some yoga or SFQ concurrently with a medtitative practice is a good idea, as it stregthens your body and teaches you how to intuitively recognize and maintain good posture.
You want to get to the point where you can hold your spine straight, while in a relaxed position for at least 30 minutes to an hour. It may seem like kind of a chore at first but it is a very good discipline to learn for your stress level and for your health.
Once you do this in conjunction with binaural proigrams like holosync I think you might notice a big difference.
If you are interested in pursuing this further, I would recommend a book or a course. There are a lot of books out there that will teach you how to use a mirror to establish the correct sitting posture. Spring Forest Qigong is always a useful complement for me as well.
[This message has been edited by garics (edited March 20, 2006).]