FileTypesMan is an underrated app, but offers far better control of your apps extensions than the "Default Programs" folder in the Control Panel. What do you do when a new installed Windows program or update takes over an extension and you try to set it back to "your" program of choice, only to find out Windows won't give up control. You could say dang, I hate Windows! Or, you can take control and change it back with FiletypesMan. Great little app! Every computer should have it. 5 stars.