Regarding the ring video, you may have to recompile the flash, as the video (FLV) that was imported originally into the flash file was considerably larger (w, h) than the stage area of the Flash instance, and also offset to the right.
If you have problems with that, you can use the redone one here
When using the HTML Editor to insert Flash Video, you can set the loop and autostart for the swf from the advanced tabbed of the Flash Video properties window. In the normal (first) properties window, be sure to enter a proportional width and height for the swf.