Audio in flash cs 5

Hi,
am working on flash cs 5.Can anyone tell me how to use audio for button?I want to call it on
diffrent button and that audio should be continue with next scene till last,also it need to adjust somewhere where user want to make it high pitch,low or medium.I tried it to make movie clip,but it cant work,may be my code is wrong.I also tried to drag it on scene,but then it plays only till that sound duration(1 min or something as per duration of audio).
Can anyone plese help me to know perfect code for buttons.There are 3 diffrent buttons,with diffrent audio.Plese help me Out!