I'm not aware of any background music. It is the annoying sound effects when I put a letter down that I would like to turn off. There is nothing in my settings that stops it. But I have a sense that the noises are not always there. I think they are more frequently present when I play the 'puzzle' mode, and when they really annoyed me was when I played a 'race' game. The email game I have with my friend is fine.

I used to have the game on silent, but it seems to have lapsed and now I cannot find how to silence it again. The noises are extremely distracting, particularly when I am playing a timed game. How do I make it silent again?

@lexulous I like the current set up as it gives you something to aim for. If possible, it would be nice to see a few other moves that have also been good after seeing the AI move. I like to look at the AI move even if I've beaten it. It is always fascinating to see the different moves which can be made on one board.