Compact discs are a popular and inexpensive way (not counting the cost of a stereo system) to bring white noise into your home or office. You can get almost any sound imaginable but the most commonly used are nature sounds like rain, thunder or babbling brooks and nature sounds overlaid with soft music. The advantages of CDs are a high quality sound and low cost. The disadvantage is that, if you are using the sound to help you sleep, the interruption when changing tracks or cycling will often times wake you up. Generally the best uses for CDs are for office privacy, meditation or just relaxing.