I have a Harman Kardon speaker with build in Chromecast. I would like to have the voice of the Homey over this speaker. Is that possible? When I create a ‘Then’ with ‘Activate Harman Kardon speaker’ and then make a text or a MP3 file it still plays it off on heh Homey instead of the external speaker. Playing music does work on the Harman Kardon.