I'm really glad I saw this posting in time, because I'm the perfect guy to help you with this! I'm very familiar with brainwave entrainment, having used it before in various forms for sleep aid, meditation, and energy. I was dissatisfied with the offerings that I found around the internet so I decided to program my own brainwave entrainment machine. It can do any combination of binaural beats, isochronic tones, and other less common entrainment techniques.
Something special about my binaural beat module is its ability to generate extra harmonics on top of a sine wave, which all maintain the exact frequency distance apart from one another. Usually if you use waves other than a sine wave, none of the upper harmonics are synced to the right frequency. My binaural generator doesn't have that frequency warping, every harmonic is locked at the exact same frequency ratio. In plain terms what this means is instead of a pair of oscillators, you've got multiple harmonics which all increase the potency of the binaural beats.
I can also offer isochronic tones, amplitude and filter modulation of noise or external audio input, rhythmic panning and stereo detuning, etc. I've also got a nice library of ambient sounds to make it more enjoyable to listen to as well.
I'm out of room but to sum up, I guarantee I can deliver the highest quality audio entrainment available anywhere. The flexibility and power of my generator is unparalleled.
Looking forward to working with you!
Cheers, Kyran