This is NOT true binaural beats as the oscillations occur equally in either ear. Take out either left or right headphone and you will still hear the beats. You shouldn't until both tones are introduced together.  

The tones also, do not correspond to the frequencies in Hertz displayed at the top.

What's going on here?
 
Perhaps Jody can tell us.
Anything deeper than Beta will certainly help with anxiety. Mindfulness/relaxation/meditation can be done in Alpha, Theta or Delta.
Clive Raynor