Looks like for now, to embed a SWF you will have to use the old Anarchy player FLASH button (it will be replaced at some point…).
Size does not seem editable if you don’t get it right the first time – argh.
[kml_flashembed movie="https://udrive.oit.umass.edu/mturre/classroom_image_testing/jpg_neutralgray_ACR/jpg_neutralgray_ACR.swf" width="550" height="300" wmode="transparent" /]