Like Pope said: there's no way to get a .FLA from an SWF. It's rumored it can be, but I haven't seen anything working yet.

However, you can extract some materials used within it like sounds and bitmaps using SWF- Browser (http://swifftools.com)

Since you've only got your projector left, you should first extract the .SWF from the projector. You can use Swifty Xena for that (http://www.buraks.com/swifty/xena.html)

Then take the resulting SWF thru SWF-Browser, and you'll be able to get at least some of your materials back.

Thanks,
Edwin