acorn.com is not on the list, but I've been told it will work via airPlay ???
I have acorn for ENglish mysteries. And wouod like to play from my laptop to my TV using Apple TV 2nd generation. ??
That would be mirroring, not basic airplay, so it wouldn't matter if it was on an airplay list. Do you already have mirroring setup? If not, keep in mind that it requires a recent Mac (2011 or later) running Mountain Lion. Otherwise you will need to use something like airparrot.