Audio Progress bar scrubbing/slider?

I have an audio progress bar that I have created. It uses the following code:

import;progress_bar_inst.tb_mc.scaleX = 0;
function EnterFrame(evt:Event):void {
    progress_bar_inst.tb_mc.scaleX = instructor_audio.currentFrame/instructor_audio.totalFrames;

It works great! But I would like to add the ability to “scrub” or use a slider to move forward and back in the audio clip. (like it does with FLV Playback component)

I have no idea how to do this. DOes anyone have any info on this, or is there an easy way to add to my existing code to add this functionality?