Audio/Video files are digital formats used to store sound and moving images. Common audio file types include MP3, WAV, and AAC, while popular video formats include MP4, AVI, and MOV. These files can be played on various devices, such as computers, smartphones, and tablets, allowing users to enjoy music, podcasts, movies, and other multimedia content. These files are created through recording or editing software and can be shared online or stored on physical media like CDs and DVDs. Compression techniques are often used to reduce file size while maintaining quality, making it easier to download and stream content over the internet.