I am trying to set-up my sound right for a meditative brainwave generator application.

It requires that sounds directed to the right and left speakers are only heard from those speakers. When I use the test utility with it, I can hear a slight sound coming from the opposite speaker.

When testing it I remove the speaker it should be coming out out of, and only have the opposite one ot my ear, and I still hear the sound a little bit.

Does anyone know how I can fix this? I have already looked through my soundcard utilitys and set everything to <none>.