You can play CD's for feedback using the MMP player.

Set up or load in a built-in protocol that uses the MMP.  Most if not all built-in protocols control the MMP player.

Start the session

Press the "Window" button on the training screen

Press "Multimedia Player"

Select "none" for Animation

Select "CD" for Sound

Select the track(s) to play

Press "Start"

The CD will now follow the feedback protocol