Gotcha. And yea sbagen is an OLD (1999) but probably still best piece of software I know of for generating binaural beats programmatically with some neat routines for dropping tone over a set time. there's some good extensive documentation on doing so.
I guess I could rephrase though, as I understand beats a bit more but less brainwaves, and you seem more read on that subject. Would you see particular benefit in being able to access say, theta wave state on command? You mentioned EM vibrations having the ability go put people in certain states, and I guess I'm interested in putting that to practical use. I played around with the Monroe Institute Gateway Experience cd's I downloaded years ago, but probably didn't really give it quite as much follow through as would have been ideal.