You could use WAI-ARIA’s aria-label
attribute:
It provides the user with a recognizable name of the object.
Also: Is there a reason why you don’t use button
/input
instead of div
for the play/pause buttons? With buttons, your markup could look like:
<button type="button" aria-label="Play">►</button>
<button type="button" aria-label="Pause">‖</button>