I recently installed foobar2000 which brings up the Set Default Programs interface to handle file associations. I've never used it before, so it's likely that this problem was around for a while. At any rate, for *every* program, while I can select new file associations I can't deselect already associated ones. All of the checkboxes are greyed out and can't be unchecked. I've Googled around and other people have had the same thing happen, but nobody's proffered a solution. Is this the intended functionality?