Download the Free Google Play App "FLIPPS".
Link - https://play.google.com/store/app...bianor.am
App is also available on itunes, but i dont have ios so didnt check there.
From the left menu select the option "Most Flipped".
Frozen should be the top item.
I casted it to my chromecast and it played great without a hitch.
Also, i think there is some limit to the number of free movies you can watch(9?), but i didnt care as most others are pretty old ones.
As per the App, it supports all the following modes -
Stream your favorite comedy or hit movie on TVs from Sony, Samsung, Panasonic, LG, and Phillips TV. Or use your Xbox 360, Xbox One, DISH Hopper, Chromecast or Apple TV.