I am new to Ubuntu, running 16.04, so forgive me if I've overlooked something simple or obvious. I've been on this thread How do I play .swf files? but nothing there has worked for me.
I installed gnash but it only displays a blank screen when I try to play the .swf file.
I tried the Adobe Standalone Flash Player, but it only asks for a url. I can't determine any way to play the .swf saved on the computer - the player is not an option under 'open with'
When I tried the Edit /usr/share/mime/packages/freedesktop.org.xml file option, when I found that file, it opened in my firefox browser and I could not edit anything.
When I try to open the file directly with Firefox, it just asks what program I want to use to open it. If I choose Firefox, it opens another tab with the same question, again and again.
VLC media player will not play the file.
What else can I do?