Well the HTML site is redirecting to the flash site as far as I can tell. And the URLs are all goofed up and silly. Oof. You got your work cut out for you here, especially if the client is unwilling to change as you're describing.
Anyway because there is nothing but a Flash site here, Google is not crawling it and it's not being indexed from what I can tell. I grabbed a couple strings of text and ran a search for them and the site didn't show up. The homepage is indexed, but it will never appear in the desired SERPs as you already well know...
Your client would really hate me because I'd be trying to convince them to change their entire company name. I realize this is a localized business but there are 3 different "sweetlightstudio.com" websites that all look the same to me. Now I know there are cities at the end of each one but I guarantee you a large portion of potential customers get confused and end up on the wrong site and then say "wait I don't live in San Francisco what the heck is this" and leave.
Well good luck with this one! Ha!