Step 1
Choose File > Publish
Step 2
Upload your .swf file to the inernet.
Step 3
Open the post where you want to insert your Flash movie. Insert this code:
<object width="550" height="400">
<param name="movie" value="somefilename.swf">
<embed src="somefilename.swf" width="550" height="400">
</embed>
</object>
Step 4
Add some facts about your sources and submit the post.