Even so.
It's still not something exactly approved of or endorsed by Adobe :p.
It can be done, but you don't have to pay for it, if you get my meaning.

You're not supposed to take apart SWF files other people have made.
It's not something Adobe approves of.

It's a program bud, they have some free ones on this site.
But I recommend SoThink SWF Decompiler.
It's really nice. You can buy it or find a different way of acquiring it.

You'd dissassemble, look for the code that defines the name, and edit it.