Very long time ago I've wrote some Perl code which interfaced with Flash. Take all what I say with grain of salt because I almost forgot everything about it. I just can be wrong. Anyway following information could be useful.

IIRC in Flash you can have variables which values can be obtained from external source: text file in very simple format:

var1=value1
var2=value2
[download]

When Flash file runs it can request this text file for values of variables from web server. Of course instead of text file you can have Perl CGI which generates text file on the fly.

Now the question if you can use values of Flash variables in URLs. May be yes, may be not. If yes you can use Flash variables and Perl CGI to create urls on fly. If not, I'm sorry.

--
Ilya Martynov (http://martynov.org/)

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