There is one more option.
Hack things around to make it slightly more difficult to do "save as".
It's not full-proof of course, but this kind of obfuscation should work for most non-technical users. That's what google and amazon do for their ebooks to some degree.
And of course, you probably wouldn't have to implement all those counter-measures. For your case, you could probably get away with using one or two of those tricks (and just say to your boss it's not fullproof -- nothing is).
Even Flash can be decompiled and reverse-engineered back to its original source files. Those tools are out there.
Last edited by quickspike (2008-01-08 00:07:03)