Option just can choose one of the OUT program....do not have default OUT program(Follow win10 OS)
This is the Flashplayer''s option：↑↑↑↑
The right option should be this:↓↓↓
When I play video from IE or EDGE ,If i want change audio out program, I need choose one of then every times on web page rather than change it in win10OS
But my EDGE and Flashplayer was The latest version，I can't solve the question by update
Please see Flash Player 188.8.131.52 - Audio Issues for an update on this. Unfortunately Edge users cannot install the beta release. If you want to test out the beta, you'll need to install a different browser (e.g. Firefox).