The tech came a long way after meeting them... its now a web app driven by JS that plays, pauses, forwards, rewinds audio in sync as seen in this 2014 video...

https://www.youtube.com/watch?v=OJ9itwp_wYc&index=20&list=UU...

We revived it after seeing Google's April 2018 patent & are excited about finally getting it out to the public.