C# developer w/ Flash knowledge for Windows Applicat.

I need a windows application developed in C# that allows to input SWF files (that are converted from PDF - i already have that) and add further contents, such as 1) - video, audio (players already do exist that can be integrated) - hotspots 2) - text - images - SWFs to it. Content described in 2) shall also be animated with a few typical Flash animation effects. The application shall be part of another app - thus, royaltee free SWF libraries - if you are going to use them would be preferred. A more detailed briefing will be provided to the bidder.