I found a solution to the problem that should work for everyone.
Use this plugin to embed the flash:
https://kimili.com/plugins/kml_flashembed/wp
And generate the code with this page:
https://www.bobbyvandersluis.com/swfobject/generator/index.html
Now what you got to do, is make sure allowscriptaccess and allownetworking are set as always and all. (thanks llamaman for the heads up, but this plugin needs allownetworking too)
Where the generator says “Publishing method”, make sure that is set to static. Copy the <object> code from the generator to your theme template, but not the js link in the header (I could never get the flash to show up with it in there, even with the correct url). Also make sure the object points to the right url for the flash movie. eg: <? php bloginfo ( ‘stylesheet_directory’);?>/movie.swf
This is the only solution that worked for me.
