sound problem.

I have two loops residing in two MC`s named "bass" and "wahe", I have figured out how to fade and pan the loops individually, but; when I fade one loop, the other loop also fades!!??! (this is also the case with the pan)
Is there any workaround for this???
-----The Bass loop----
onClipEvent (load) {
top = _y;
left = _x;
right = _x;
bottom = _y + 100;
}
onClipEvent (enterFrame) {
if (dragging == true) {
_root.bass.bass.setVolume(100 - (_y - top));
}
}

//in the "bass" MC:
bass = new Sound();
bass.attachSound("soundBass"); //soundBass is the soundClip


------The wahe loop-------
onClipEvent (load) {
top = _y;
left = _x;
right = _x;
bottom = _y + 100;
}
onClipEvent (enterFrame) {
if (dragging == true) {
_root.wahe.wahe.setVolume(100 - (_y - top));
}
}

//In the "wahe" MC:
wahe = new Sound();
wahe.attachSound("wahe"); //wahe is the soundClip