Suggestions
 

- If an instance is already running and the option "Allow multiple instances" is unchecked, opening another instance could restore the running instance and put it on top of the other windows.
- A "Browse for icons" dialog window to choose a custom icon for associated files.
-When the Movie window is docked in a corner different from (Left,Top) and the Movie window is resized, would be nice if that window still remain docked in that position, so the movie will be still fully displayed.

Bye :D

i agree