Flash will "autostart" and run and stop.....that is why when using Flash as a header, for example, the script needs to be really timed well, so it's not too fast, or weirdly slow ... before looping.
No way to insert a delayed play action unless you build into the front end of the "file", because unlike a video, Flash is not "user interactive" (no start and stop buttons). So, just remember that flash will begin as soon as loaded and either play as created to the end or as a loop: add time to the front end if needed, but make sure the timing is smooth throughout the file, looped or not.
PS: Am surprised the FTP process is not mentioned.....seems to me to be a critical part of getting the whole thing to "work" doesn't it?? <sorry!>