I like this, I have one suggestion though, can we have an option to place the tiles but not hit play?
That way I don't end up putting down impossibly obscure words.
(I bodged this myself by just commenting out functions doHitPlay() and confirmPlay(), not sure if that will break anything else though)

only reason i gave it 4 instead of 5 stars is it plays so fast just doesnt seem like a human playing making plays but def works fine :)