Hi Lawyer,
There have been previous posts about binaural beats on this forum and some others here at NT. If you use the forum search feature you can bring those up. I just typed in binaural beats and clicked on Search Posts rather than Threads at the bottom left.
I would post my search results but that doesn't work/transfer here, so you would need to do the search yourself.
http://neurotalk.psychcentral.com/search.php