The issue with Google and Flash is an urban myth; The html container can contain search keywords, text from site, links to other sites, etc..., just like any other website.
The upside of doing it this way is that search results always lead to the index page, rather than to internal pages, as often happens with traditional html/css sites.
comments to the OP:
The movieclip on the merchandise page is out of alignment.
I would rethink the soundtrack; it's too obnoxious for me, and I like hard rock music..
The topnav opens links in the site window; open a new window instead.
"main arena" and "classic arena" content area should change color (or something to that effect) when the links are clicked, to attract the users attention.
IMO, the overall design, which is nice enough, is too boxy and conventional for a Flash site.
Looks a little bit like a basic Flash template.
You might consider a liquid layout for this site, utilizing the entire display area.
ie: Anchor the navigation to the edge of the display, and float the content in the center.
You could also include a fullscreen option in the form of a button on an "entry" page.
ie: page with logo and welcome verbiage, site requirements, and an option to enter the site in fullscreen mode.
GL