Audio actionscript problem (AS2)

[RansomHostage]

Hello,

I am using actionscript to play sounds in my game. Here is the code I'm using for a gun firing when the user clicks:

var beretta:Sound = new Sound();
beretta.attachSound("gunshot");
beretta.start(0, 0);

That works fine. I also have a background sound that plays on a constant loop:

var tvstaticsound:Sound = new Sound();
 tvstaticsound.attachSound("tvsound");
 tvstaticsound.start (0, 999);
 tvstaticsound.setVolume(5);

The above sound varies in volume depending on what room the player enters. I'm using the following code to alter the volume:

_root.tvstaticsound.setVolume(7);

The problem I'm having is that when the actionscript alters the volume of tvstaticsound, the beretta sound also gets changed to the same volume. What am I doing wrong? Surely only the audio I've specified should have its volume changed?

Thank you.

[a_modified_dog]

tie each sound to unique movieclip timelines to gain individual control

this.createEmptyMovieClip("gun",1000);
var beretta:Sound = new Sound(gun);

this.createEmptyMovieClip("tv",1050);
var tvstaticsound:Sound = new Sound(tv);

tvstaticsound.setVolume(7);

[RansomHostage]

Thanks a lot, a_modified_dog. What does the number in ("tv",1050) determine?

[EvolveDesigns]

it's the level the mc is loaded in to so gun would be below tv.