Hi @av8rdude, You can use your smartphone to play the sound directly with smartthings, you dont need google voice or tasker.
You could add The mediarenderer device type and use upnp monkey app and you convert any android to smartthings speaker, upnp monkey is too a dlna server, you can select the sound from you phone and trigger from smartthings, control volume, trigger hours, etc
free sound have a good background sound to halloween