Popular Player is a term that can refer to a variety of different people or things. In this case, it refers to two products from Apple: iTunes and iPod. iTunes is a media player, media library, online radio broadcaster, and mobile device management application developed by Apple. It is used to play, download, and organize digital audio and video on personal computers running the macOS and Microsoft Windows operating systems. iPod is a line of portable media players designed and marketed by Apple. It is primarily used for playing digital music and videos, but can also be used for other purposes such as viewing photos, playing games, and storing data.