Need more info to help. How are you editing the pages and how are you uploading.
You should have a flash file folder with the .fla file(s) in there. It also must be uploaded. Sometimes you may have the .swf and .fla and .html or somewhere else the text is held and edited. Everythings got to get uploaded for flash to work and be in the right place. Don't know if flash works on free sites but it does on pro.