Nice looking site. There definitely needs to be a way to turn off the sound.
The contacts link should either go to an email form, or have a page with full contact information - email, phone number, etc.
This is just personal - I don't like flash based navigation. I don't like a lot of animation in the menu. I find it distracts from the meat of the site.
I also think you need to define yourself a little better on your homepage. From looking at it, I really don't know what you do, or what you're selling.