Gnome-Do and music

Hi all ,

i really like gnome-do..but there`s a problem just driving me nuts..
i installed the rhythembox plugin and Super + Space and typed some songs titles...and pressed enter
i suppose at this point rhythembox (which is already in system tray ) should play the song....
but what actually happen...is nothing..literally

so what ? or how should i play a song from gnome-do !