Assign images to Play/Pause
By default, the Play/Pause addon includes designs for the button into Play mode and Pause mode. You can change these designs at any time from the General submenu on the Properties panel, by choosing the images you would like to assign to such modes on the Play and Pause parameters.
The Play/Pause addon enables the preference of the button level of visibility through the control of opacity in design. On the General submenu, click on the option Show opacity to display the opacity parameters, idle is for normal display of the button and hover is on mouse over. Choose a value between 0 and 1, where 0 means 0% visibility, 1 is 100% and 0.5 corresponds to 50% visibility.