The SleepSync audio continues keep you in this deep state of Delta sleep for the next 30 minutes, just to make sure you are in a deep sleep. The SleepSync 'Get to Sleep Faster' audio program is supplied as an MP3 file, which you can download immediately after your purchas You will need to have access to an MP3 compatible device to listen to the SleepSync program, like an MP3 player, iPod, Windows PC/laptop, Mac computer/lapto The background music is very relaxing to listen to, and would send many people off to sleep on it's own ...but it's the Isochronic Tones that provide the true power and effectiveness of SleepSyn (Windows using a free CD) Use the free Windows Media player to burn CD's, so no extra money to be spent on software etc. We provide you information on how to obtain and use windows Media Player for free, as part of our quick start guid After listening for 15 minutes you will feel extremely relaxed, and your brainwaves will now have reached a state of light sleep. Or perhaps you feel like you've got a clear head, but for some annoying reason your body is out of sync, and you just feel so restless, and can't get comfortable in your bed, tossing and turning ...on your back, laying on your right side, then the left, flipping the pillow trying to find the sweet spot ...whatever you try you just can't get comfortable. As you begin to really relax and enter light sleep your brainwaves enter the Theta state (3 to 8Hz range) Do something to fix your sleep problems once and for all, Order SleepSync now, and put your sleep problems behind you! Get To Sleep Faster With SleepSync