Cd and cassette players were once popular forms of music playback, but have since been largely replaced by digital music playback formats.

Cd players use a laser to read data from a spinning disc, while cassette players use a magnetic head to read data from a strip of tape. Both formats have been largely replaced by digital music players, which can store much more music on a small device.

Cd and cassette players still have some advantages over digital players. They are often less expensive, and can be used in vehicles or other locations where a digital player may not …