Configure Firefox to run local .swf files

I tried to open swf files from local computer in Firefox browser and it recommended me to save its. To solve this point: Edit /usr/share/mime/packages/freedesktop.org.xml as root and replace the following:

<mime-type type="application/vnd.adobe.flash.movie">

With:

<mime-type type="application/x-shockwave-flash">

Got local .swf files working properly now.