I had DTS surround sound enabled on my phone and it stopped this from working. I was concerned that my headphones were broken but it was just my phone modifying the sound to make it sound like it's in front of me which makes the wobbling happen in software. I'm so glad I watched this video and noticed this before I started using binaural beats with my phone and possibly caused harm...
I don't think it would have caused any harm (unless you had the volume really high) but it definitely would have spoiled the "binaural" effect for you.
Empire526907