Hi Kelly!
That’s a good implementation for a future update but, at the moment, there is not any tool for that.
If you wanna try to add custom code to your plugin player, just go to plugin-folder/includes/jwppp-functions.php, the player code starts from the line 926.
In the future, add that style to a playlist could be just flag an option, since all the informations are already there 😉
