When you unzip FFLS, you should have 3 folders, and a single swf titled "FFLS_CORE.swf". Make sure these folders remain intact, or sound effects and music will not be loaded correctly. 

You can run FFLS in a dedicated SWF player or in your web browser. Be sure to right-click and in the flash player settings, allow FFLS to "Store an unlimited amount of Data" or your save games may not be correctly saved. 

You can delete your save file by using the "Destroy Camera" button on the bottom, and holding it down until the bar charges. 

Happy snapping!