[sexyclient]

I think you may be missing something. The application firefox considers as the "default" app to use is the one with the word "default" next to it in the dropdown list found either in the preferences' "applications" tab under "action", or in the file-download-prompt (which, might I add, is not to be mistaken with what I'm referring to as the download manager.) I want to use firefox's download manager (the window titled "downloads") to open files with the applications of my choosing. The ones I've chosen correspond to the apps I've set my OS/DE (operating system / desktop environment) to consider as the "default" for handling these "mime type". Having my browser recognize the "default" application that has been set by the OS/DE I'm using (OpenSuse/KDE4 in this case) is the behavior I've become accustomed to in the browsers I've used before: firefox (on gnome, windows, pc-bsd and all other platforms I've used it on -- and also on just about all other browsers I've used, for that matter.) I'm a bit surprised you've never encountered this behavior before in any browser you've used, Guest :-( . The convenience of it is truly a thing to marvel upon.

Changing the preferences in the application tab has no effect on the application firefox decides is the "default" to use for the file-type. Because the apps firefox considers as "default" is the one it uses when opening files from the download manager, changing this preference won't (and hasn't) solve(d) my problem. Again, my problem (or the one I've decided to focus on due to an apparently high level of complexity of the matter) being that: I can't open certain files (that I've saved in a directory that isn't the firefox temp folder) with the apps I want to open them with.

After having said all that and (hopefully) clearing up any and all misunderstandings about the nature of the problem, I pose my inquiry yet again: How do I go about changing the apps firefox considers "default" for certain filetypes?