The CD player was an option not standard equipment, AFAIK
, in the Adam. Any Adam from 2016 onwards should support Apple Carplay and Android Auto as well as USB storage. Prior to that only USB storage works with the Infotainment system.
You can probably get hold of a second hand CD player but you would need to get it fitted yourself.
2017 1.4 Adam Slam, Grey with Black Roof, Climate Control, Rear Parking Sensors