Click 
to expand the discussion if it is collapsed.
If someone recorded a comment, here are things you can do to hear the comment.
Headphones or speakers are connected to the computer.
Click the discussion that has a comment.
Filter or sort the discussions as necessary to find the discussion.
Click to expand the discussion if it is collapsed.
Click 
(Play/Pause).
Use any of these optional controls:
Click 
(Play/Pause) to pause or stop the playback.
Click and drag the slider control (
) to move ahead or forward in the playback.
Watch the time (current / duration) counter to know where you are in the playback.
Play an audio file (Foot pedal)
Play audio files (Consultant Check)
Play audio files (Sections & Passages)