FUCK i listened 75% of it with 7.1 headphones and the beat was so luod and started to feel my body lighter. then i started to readcomments you shoul us stereo or mono.. LOL.  no beat now but i am just starting again. Interesting that 7.1 headphones make a beat and a sound like waves trought your brain. WEIRD!!! and scary. now i am listening in stereo to check differnces.
PD: i think that bass bost and other effects by your sound card or headphones must be for this. but i will check them too
Yeah, the best way to get a proper "binaural" effect is to DISABLE all the special filters, enhancers, etc. because they're going to create additional/unintended beats.
Dio