It looks like google is spidering the site, only the main page is indexed:
Google Results
Because even though you have three pages, they all load within that one page.
Google can parse flash now, and it can be optimized. However flash is still a bad choice for SEO, because you can have 100 pages of your site, all based in the flash file, and google will only see it as one site. Even if google spiders all that content, it's all bunched together in one file. If you have 100 html pages, they'll each be spidered, and each individual page will rank for terms that are relevant.
Think about focus, if you have 100 pages worth of stuff on one page, you lose relevancy for each of those pages. If the page stands on it's own, the content density is much higher. For instance if you are selling bicycles, and you break them down by brand, you have a better chance of someone finding a page about "diamond back bikes" if you have a page about Diamond back bikes, rather than finding that same information buried with 50 other brands.
Hope that makes sense. If you're really serious about SEO, google some information and start reading, there is a lot to learn, but it's worth it in the long run.