I've set up a keybinding for play/pause functionality through mpc so it's not so important now, but I'll try to play with the theme just to see if I can do it :-)
My current problem is that mpdule fails to load with evas_stringshare_add being undefined by the module and it's dependent libraries, I'm sure it'll get fixed soon (sounds like evas have changed some of their symbols around a little)...