I tried PlayCD yesterday with the same result, it worked but no sound is played. However I did not test it on my home "AmiKit" machine... But, you can play the CD with SongPlayer. It should load the content of audio CD if you press the CD button (second from the right side) of the SongPlayer GUI.
Or you can enable CDDA dosdriver by using taskbar -> Tools -> System -> DosDrivers -> CDDA. Then an Audio-CD icon appears on your desktop, open it, switch to Name mode, select all tracks and press the amplifier button from the window-toolbar. Selected tracks will be loaded into SongPlayer then.
For permanent use of CDDA dosdriver, simply move it from AmiKit:Storage/DosDrivers to AmiKit:Devs/Dosdrivers.