Hi,
maybe this will help a bit (for the autorun on MAC):
http://board.flashkit.com/board/show...threadid=29165

1. and 2. Quicktime licensing:
http://developer.apple.com/quicktime/
(Software Licensing Link)

3. No way, as far as I know

4. You can start AppleScripts from within SWFs, but I don´t know if AppleScript can check for Quicktime.

cheers