Ah ok, well good to know its not just me. But if i were them, i would not show the sound icon yet then. Just add it after there is actually sound available, cause this was very confusing, all these non working icons.
They havent hired someone for it? They have to wait for people to contribute a spoken sentence?
It's actually likely the reverse. They had audio for the original speaker, who wasn't native, but not from the new speaker. When they switched speakers, they didn't remove all the play buttons. That said, I don't see the play button anymore. But it is unlikely the rest will get audio, as they pay someone for that (taking contributions would be too much of a hassle)