I know what you are talking about OP. The commercials ARE louder than the rest of the site noises, and when they come on, there are no immediate options available to change anything, apart from the main sound controls on your PC, which is a bit of a cheek really.
I do believe you are referring to the Ads that come on whilst a game is loading, which began a few months ago, and then stopped ( Mercifully ) until someone mentioned in another post that they had gone away. Then they were back mehh. So. There's a warning to all, when you have something good going on, please do not feel the need to air it to the world in the forums...
Gotta dash, game on on the white tees oops.
Lizzie xx