I can deal with flash and actually John's page isn't slow for me. I *HATE* music and if it is on when I enter a page, I close the window. Most photographers really do believe people want to hear their music and watch a show, but, I think people just want to see the photos.
Anything that causes people to wait, or draw attention to their computer(music) will make them close the window. Think how many people surf the web at work. Last thing they want is your melody letting everyone know that they aren't working