This is a hard fork of swiffotron after WeeWorld disappeared from the internet.
SWF processor, stitcher and generator for .NET with Actionscript 3 merging
Generate, combine and modify SWF files including AS3 code from a Windows service and in high volumes.
If you wish to load the code using Visual Studio 2010 Express, then you'll need to build ExpressTest.
You can download v1.0 here.
It will install itself as a service. Assemblies can be found in the installation directory.