Fix 6+

I did 7 sequential fixes.

Commits:

• 39e117b - andrewjswan/MPExtended@39e117b: Fix App.config build error
• 7b5a25a - andrewjswan/MPExtended@7b5a25a: Fix App.config build error
• c5537e1 - andrewjswan/MPExtended@c5537e1: Fix App.config build error
• 779265e - andrewjswan/MPExtended@779265e: Fix App.config build error
• 419f611 - andrewjswan/MPExtended@419f611: Fix App.config build error
• 814a11c - andrewjswan/MPExtended@814a11c: Fix App.config build error
• bba4bed - andrewjswan/MPExtended@bba4bed: fix ffmpeg build error (azzuro patch)

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