I think the music issue can be a plus or minus depending on the mood it sets. I personally think that the right music can be amazing on a website, but the wrong music leaves me scrambing for the mute button. But then again, what is "right" to me, might be "wrong" to my clients. It also kinda boils down to *taste*

Like Joe Buissinks--I personally LOVE the music on his site and it doesn't get old to me at all. I've sat at his site for 15 minutes before and heard it loop through the different songs. I also loved Davina's music--never got tired of it (in fact I went to iTunes afterward and downloaded all of them just to listen to in my free time!). But when I go to Jeff Ascough's site, the music is bland and does not fit his amazing work. And I have to say, that mostly I do find myself seeking the mute button--which by the way should be EXTREMELY prominent! But ask yourself--who is your audience? Other photographers???? Or brides??? Brides want the COOK EXPERIENCE, and music can be a big part of that.
Here are a few things that make me cringe though:VISA/MASTERCARD SIGNS. UGLY! You are not a used car salesman! If it's really important for your cients to know this, add it to your FAQ section in a very discrete way--like under the "what is your booking procedue?" area or something. But to be honest, I have never lost a sale by not taking credit cards, and again, I have honestly only had this asked to me maybe a handful of times.
OUTDATED OR CHEESY FONTS. Nuff said on that one. But seriously, font type is very important in my book.
Things I like to see, but often don't:FAQ AREA. So important in my book. Unless you are the mystical Joe Buissink, folks want to have certain basic questions answered on your website. Every photographer has a list of FAQ--yours might be different from mine, and you can give simple, quick answers or thesis answers (ahem, like mine--which I even admit reveals too much about the process...I'm changing that when I re-do my website.

). I think websites are for INFORMATION.
QUICK IMAGE LOADING: Check out this site to see what I consider the perfect website image loading:
Elizabeth Messina. Get it??

Anyway, that's it right off the top of my head. If I think of any others, I'll chime in later!
Geneve