Television, by its name, is usually thought of as the transmission of video images but much of the information we receive from television comes from the audio portion of the program. As more programming is delivered to cable system via satellite, it is important for the system engineer to understand the various audio transmission . techniques used in the industry. This paper Will begin with some background as to why this subject should be of concern to today's cable system engineer. It will also review some audio basics that the reader should be familiar with. Then the three most common forms of transmissions are discussed pointing out advantages and limitations of each one. Next, we will review the most commonly reported problems and some of the factors that contribute to them. Finally, the paper will discuss types of audio testing normally performed and give a step by step approach to system alignment.