You site looks lovely, very sleek.
Absolutely loathe the sfx. I'm a firm believer that media (sfx / music / clips) should be an opt in thing, as in ..I choose to play the music / sfx / vid.
The reasoning I have is simply this: no matter how professional or appropriate the affect is, it's not what I'm visiting the site for. After the novelty runs off sfx & music can become very grating, annoying the user - user leaves, swearing never to return.
I accept my view is not that of everybody, but that's just my 2 pence on the matter.