Michael Landgraf's site has AVS items for purchase including light and sound stimulation devices. Of interest also is the AVS Journal that has useful articles on use of light and sound technology.
Web site for Ruth Olmstead, M.A.
The Monroe Institute is a pioneer organization for binaural sound and research of its effect on the brain. You will also find here CD's, Audio tapes, and VHS tapes that contain binaural stimulation for relaxation, alert states, and self-exploration.
This site has Light and Sound machines as well as other products that you can purchase by mail or on-line.
A company that makes and markets AVS equipment.