Please, Help Me With SetVolume&setPan

I have a problem in my flash moovie with those two commands.
I have two sound objects, and the target is to create sound, where one sound stays static and onother one changes in Volume and Pan.

So.. I have two sounds, lets call them sound1 and sound2
In first frame of main scene I have script:
Seaside = new sound();
Seaside.attachSound("sound1");
Seaside.start();

Then in different moovie clip I start to manage with second sound:
SecondSound = new sound();
SecondSound.attachSound("sound2");
SecondSound.start();
SecondSound.setVolume(0);
SecondSound.setPan(-100);

Untill this ****ing moment everything is just fine, but here setVolume and setPan is affecting not just sound2 but sound1 also changes it's propertys.

Oh people please help, this sound should be excellent, I just have to get over this ****

Thankyou in advance!