It is possible to use a CD adapter kit with your cassette tape player. Insert the adapter as you would insert a normal tape and the adapter cassette should begin playing like a normal tape was inserted. The display and radio buttons will function the same as if a normal tape was inserted.
If the adapter cassette won't play, press the SIDE button (Station Frequency Preset Button 3) to reverse the side of the adapter cassette. If the adapter cassette still won't play, refer to the directions that came with the CD adapter.