ActionScript 2.0 :: Make Volume Slider For Those Sounds Inside Movie Clips

I have seven loops in total. I imported them into the library. i've put each of them in a seperate movie clip with the names loop1,loop2,.In those movie clips, the first (key)frame contains the action stop(); . The second frame is a keyframe too and from here on the sound starts. And of course they loop.Okay, now the buttons to control the movie (Prev, Stop, Play, Next) work fine, but let me explain the system i used. I used a var loopnumber and everytime you click Next or Prev, it '+'es 1 or '-'es 1. I also set a variable number_to_play = "_root.loop"+loopnumber, so you would get _root.loop--number--, where --number-- is 1,2,3,4,5,6 or 7. To actually play the sound, i used tellTarget(number_to_play) {gotoAndPlay(2)}.That's why i added stop(); to the first frame of those clips.how can i make a volume slider for those sounds inside my movie clips ? I've checked this forum already for questions like this but they don't use the system I use.