I must admit, I was a bit surprised at some of the (over?) reaction here. I have some ringing in my ears (only noticeable in quiet situations, really), but it's not what I consider serious at this point. But it's no wonder... I've played drums and percussion for 40 years, worked in a factory for three years where a lot of the equipment made loud, high-pitched squeals, etc., and more recently I've been involved in a yard care business (for 13 years) which requires daily use of loud machines. Add to this (over the years) much listening to music, loud rock concerts, and the everyday noise of living (loud traffic, sirens, you name it), and you might say my 51-year-old ears have heard their share. We subject ourselves to this sort of racket every day, and there is nothing illegal about it. If the author of this software makes no false claims about being a doctor, and makes no guarantees about results, or even states something like, "use at your own risk," I fail to see what's wrong here. It's a program that generates sound... big deal. A lot of other software can generate bizarre sound effects, etc., and we gladly listen to that, not to mention all the other kinds of sound we are hit with every day. Sheesh people, lighten up. No one is forcing you to use this software if you think it's bad for you.

I haven't tried this software, nor have I looked at the developer's site, because I just don't feel the need right now. I just wanted to comment because it seems to me there is a misguided witch hunt going on here.