Controlling sound in flash 8

Hello, could anyone help me!
I made a simple flash music player with play, pause and stop buttons. They control a movie that contains the sound, which is pretty long - 15 min. However when I drag the sound onto the scene the sound layer doesn’t display the waveform. Furthermore I don’t know how to reference the sound in the script. When the movie is published it doesn’t work. I would be very grateful if anyone can explain me subtleties this about.
zhivko