Movie ok on testing but not when published

hi all, i have finish a little movie, so i’ve test it with Flash preview and all seem to be ok, but when i publish and open it with explorer or other browser, the movie isn’t reproduced at all: expecially the song isn’t charged and sound volume control also seem to be broken and not dragable.
The first frame of that movie start with an onLoad() instruction that have inside the rest of code for sound and controller.
On flash preview all is ok, but if i publish and open it with a browser that problems come out. How is it possible?

If i cut off the onLoad() all is reproduced also on browser, but the song is reproduced for many times, when animation pass for first frame.
how should i solve?