Well we finally found a way to do it and the results turned out pretty good. We basically setup Wirecast on a Mac station - built the show on that laptop then set I've attached some pictures of the items and our workflow along with a sample broadcast of the web feed after the conference. We had the feed sent to the back on a projector screen as well as the breakout rooms for overflow. The Wirecast is a software based switcher and we can upload videos, pictures, jpegs and more. I was really impressed by how it handled for the production. We had 2 other church buildings tie in and attend the broadcast. I did hear that at times, the video would fall about a half a second behind the audio so we'll have to test it further for future broadcasts. Good luck!
Example Production
[video=vimeo;32412979]
http://vimeo.com/32412979[/video]
Rough Stills Of Setup
Rough Diagram (Quick Sketch)
Equipment
1. Video Input Adapter (We used the Canopus Twinpact 100 but here's a cheaper solution)
http://www.amazon.com/Canopus-770101501 ... B00030ATTO
2. Apple DVI to Video Adapter
http://store.apple.com/us/product/M9267 ... PIP-Google
3. Roxio Video to USB
http://www.amazon.com/Roxio-Easy-VHS-to ... B001LQO4P4
4. S-Video Cables/RCA Cables
5. Laptops and Software