Peak performance/DIY neurofeedback system Options

[Indigo Sky]

I was inspired by this site: www.alphalearning.com but their training course prices are beyond my pocket, and they only sell their machine to people who've done the course.

I'm interested in how I could build something like their system to assist in creating peak performance/flow state/superlearning state to help me with playing instruments or studying course material at home. If I've understood correctly, Alphalearning's machine contains an EEG/software setup that can recognize when a nonoptimum situation arises during study/practice, and can recorrect/rebalance the brain back to the optimum state by providing the exact frequency needed using audiovisual entrainment.

I have got a David entrainment device and wonder if anyone can suggest what I would need in terms of EEG and software to make it all work. No substitute for professional neurofeedback, I'm sure, but that's also way beyond my pocket, plus I'm rather enjoying learning about all this stuff!