In a vacuum tube, nobody can hear you scream.

[rayheinrich]

Well I wasn't really being serious but...

I never am.
I looked on the web for some binaural beat audio recordings.
There were a lot that said they were, but I couldn't find one that really was.
(But I didn't search that hard.)

In a real binaural beat audio recording, when you listen to only the left earphone
you would hear, say, 1000hz . When listening to only the right earphone you would
hear 1200hz. But when you put them both to your head you would hear 200hz as well.
All the damn recordings I could find had already mixed the frequencies. Each earphone
already had all three frequencies.

Binaural beats may not entrain your brain, but visual ones actually do.
Google "Gysin dreamachine" .
I tried one that a friend made a long time ago. It worked great for him.
It just gave me a headache so I had to take drugs instead.