Controlling the volume of a streamed audio file


I have a music file that i streamed in frame 1 of my movie, and i have a button in my movie that i want to control volume. How can i make it so when I click the button, it lowers the volume of the sound to 0? (i dont want to make it pause it, then the stuff in the movie wouldnt sync up. i want it to make the volume 0 so if they turn it back on, it continues to play in sync.)