If you just want to sit back and relax while listening to language learning tapes. Yes the Light and Sound Device can be used in conjuction. The relax the mind and guide into an appropriate state for learning. On the proteus you just select one of the learn with tapes presets. You can even produce your own tapes.
You can use them in conjuntion with paraliminals and Natural Brilliance. An added entrainment value however not necessary. Any additional benefit is hardly noticable. I don't see a point of getting one just for paraliminals.
The proteus (and others) can be used as an entrainment device on its own, to aid sleep, meditation, used in conjunction with tapes or CDs; for moving ordinary learning tapes/CDs closer to accelerative learning mode, paraliminal, hypnotic, self created and purchased affirmation, soundscape music for relaxing and even ordinary instrumental music tapes/CDs. Plays audiostrobe (light show is triggered by the music) with some relaxing music CDs.
Alex
