If you need help falling asleep, brain entrainment may be just the solution that you are looking for. Brain entrainment is the process of using outside sonic stimuli to help your brain re-learn how to sleep. The theory is that insomnia is, in part, a learned behavior. With binaural beats you can reach the theta and delta brainwaves which can help you sleep.
Binaural beats can influence your brain function. Theta brain waves are the state that your brain is in when you are dreaming or are in deep meditation. It's also the REM sleep cycle that is so important to your body's recovery. Theta brainwaves are measured at 4 to 7 Hz. Delta brain waves are below 4 Hz. It is deep dreamless sleep where you lose body awareness completely.