yes there is supposed to be music !
the music is not the main thing but in the sample demo there is kind of music (or words, or at least identifiable sounds) in background, in addition to the binaural sounds... and I can't hear them with my .drg

http://www.i-doser.com/sample.htm

...

Hi, I've bought a few doses and I even feel some effects but I can't hear any music like in the demos !! I just hear a white noise (not so static) and the famous binaural sound, but no music... I'm sure it would help a lot to achieve the mood and to enhance the (small) effects that I feel... I don't...