We casted the new RTAA to our LG smart TV via the cast function from my laptop - worked great! The only problem was that once the video stopped, we were stuck on a Vimeo logo with no option to back out except to force open something else on the smart TV.
Secondary feedback - "post to" on this feedback forum still links to every forum that was operational on this site, including some that I assume won't be needed going forward, i.e. Sugar Pine 7 and Funhaus.