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Ubuntu OS 14.04 Can't install Firefox video player file, no run command found, click on file flashes a dos screen, nothing else happens.
I save the file on download, click the file in download screen, a dos window briefly flashes, nothing happens. Look in several places for a run command, drop down options text, nothing opens offering a run command. I open file download location, same thing. Try "open with" on the first window, next window reveals a bunch of options or files, non of which seem to pertain to opening a video file. Same thing happens at other times, opens to files, but no program commands, do not know how to locate program commands in Ubuntu. Open with option need more direct file opening parameters!