Hi.
I am trying to create a promotional banner of a singer. I want to place a
complete song with an on/off button in the movie, which by logic is an
independant Movie Clip. The problem is when I export the movie, the song
starts, and after a few seconds, and while the song is playing, it starts once
more (as a layer) and this continues until the music is nothing but a mess.
Also, If I turn off the music button, the song starts playing again,
regardless of my off command.
Can you please help me?
Thank you.

You need to put a simple stop(); into the movieClip that plays the sound.
Most probably it starts the sound on frame 1, then plays a few frames and then
loops back to the beginning and - voila - starts the sound again.
I don't know what your movieClip is doing in addition to playing that sound,
but you can either put a stop() already at the very beginning of the first
frame or at the end of the last frame. It doesn't matter as long as it's there
:-)
Wolf