embedded player supports swf
 

I couldn't find one, but I may have missed it. Is there a mod of an embedded player that supports playing swf files for 3.7 in a post?

From what I understand SWF is an actual flash file containing executable data, Adobe Flash player itself is what plays swfs. FLA is a resource file containing just information, like sound, images, etc...And the swf is what processes that information when run through the flash player. The only thing you could do is to create a custom bbcode with a generic object/embed tag as the code and passing in the url to the swf file for the param. But each swf usually takes different parameters, and its impossible to create a 1 size fits all for the params to pass to all SWF files you may come across.