Remember that many content providers do not want to play along with casting. Chromecast and how it works is not what I'll cover here. In order for the content to get there, there are some requirements and if not, it won't show.
---> ALL SHARE is Samsung's own system. You'll have to choose one or the other.
I have not heard of a grand unified solution. All the makers are not going in the same direction.
I have a galaxy note 10.1 tablet and recently bought a google chromecast so i could watch things on the big screen i have my chromecast connected to the internet but it wont show my device when i turn all share cast on. I can see certain things on the big screen such as bbc iplayer and other apps with the chromecast icon on them. Any ideas why the chromecast is not on list. Thanks