Need help with a Kirupa volume tutorial

Need help with a Kirupa volume tutorial
I’m working off this tutorial:

http://www.kirupa.com/developer/mx/volume_slider.htm

The only problem is that the tutorial controls the volume for sound objects. I’m working off a project that is based on a template and sadly I didn’t get access to the sound files that went into building it so sound objects are a no go.

Is there a way to make a volume slider working with the sounds imbedded in a site?