I haven't tried binaural beats yet, but am planning to. At Walmart, they have a CD by Patrick Marsolek that has binaural beats on it. I've even heard that they will help you travel quantumly in time! If it works for me, at least I won't have to combine recordings and use a NovaDreamer anymore.
I heard about the time travel thing on YouTube; they said time travel frequencies have certain sounds to them. On Walmart.com, I typed in the phrase, "Time travel Frequency" and the Patrick Marsolek CD showed up.
Or you can get the Dr. Fred Alan Wolfe AKA Dr. Quantum CDs. I'm not sure how they work, though, whether it's just lectures or a step-by-step process on how it's done. I'll have to email him about that.