I hope to contribute something here to help people understand what Holosync is, and how one can easiely, scientifically and legally create the his/her own sound files that contain the same technowlogy used in Holosync and Hemi-Sync and any binaural beat based brain entrainment products.
First, before argueing about whether Holosync is a scam, I suggest those who are not familiar with what goes behind the scene of Holosync to go read about the original paper on "binaural beat", and the brain entrainment research papers, available free in hemi-sync.com (you must do you own leg work, I am not going to spoon feed here, it's all in the website and its links).
Once you understand what it is, and you would like to give it a try, there are a few options, one is to get an inexpensive product that uses the same technology, don't be brian washed to believe that only the more expensive products like Holosync or Hemi-sync are the "real" ones, if you understand what the technology really is, you know they cannot fool you with their own words, because they are use the same stuff! One such product can be found at http://www.mercola.com/article/neuro_technologies.htm
(I am not related in any of the websites I mentioned here)
There is a free program on the web that you can use to create your own binaural beat sound files, here is the link for a Yahoo forum that has good information about the program and its uses: http://health.groups.yahoo.com/group/bwgen/
Hope this helps. Personally I have tried Hemi-sync and Holosync and home made beats, I am not getting the noteble benifits like those who claimed they have, but I didn't have bad side effects either. May be they did help in ways I cannot tell. Give yourself a try to see if they are right for you, now that you know it can be done for free!
Fear Not! Peace and Love to all!
