A PLS (Playlist) file is a plain text file format used to store a list of audio or video files for playback in media players. It's a simple and widely supported format, making it compatible with a large variety of software and devices. The file contains a series of entries, each specifying the location of a media file, along with optional metadata such as the title and length of the track. PLS files are often used for internet radio streams, allowing users to easily access and play a continuous stream of audio content. The format is human-readable, making it easy to edit and customize. While more advanced playlist formats exist, PLS remains a popular choice due to its simplicity and broad compatibility. It's a lightweight solution for organizing and playing media files in a sequential order. The file typically contains the file path or URL of each media file, allowing the player to locate and play the content. The PLS format is a legacy format, but it is still widely supported by many media players.