I assume it's just homepage which is complete flash, as it will get really difficult to edit internal pages in flash later.
For the search engines, there are both white hat and black hat things you can do to get this site indexed.
Some of the white hats are:
* Make a sitemap, place a link outside flash.
* Build links for some other page instead of homepage and let search engines enter from there.
* Add meta description tag so they at least have something.
* Use frames and make good use of <NOFRAME> tag.
flash with frames and SE indexing here. The frame technique there is tested.
If you use this, please copy paste text in flash as it is, without changing or adding keywords.
Black hats: (not recommended.)
* Server side redirects, not java.
Nothing can beat this. But if you get caught, out you go.
Search engines will not detect this, but some frustrated competitor will, (who doesn't have anything to do, but some free spam catching), and report on matt cutts blog.
Bye
