CDPlay is very easy to use & understand. It is made of a single window (which appears in the bottom-right corner of the screen). You cannot move this window til version 1.0. This window is made of a standard cd-audio front panel (No comment...). This window has two states : Always on top or can be hidden. If CDPlay is always on top, this means that no others applications can hidden the CDPlay window, in the other mode a window can overlap the CDPlay window, and so hide it. You change this mode in the INFO Window (press the info button) with the ALWAYS ON TOP checkbox.
You can also ask CDPlay to play your CD track in random order. To do this, use the 1->2->3 button at the left side of the LED Panel. If this button is depressed then CDPlay play the CD in normal order. Shuffle mode is when the button is pressed.