Scolling movie clips

I’m in desperate need of help. I’ve created a working slider and the movie clip which I want to scroll through. My movie clip is actually a group of songs I want to be able select depending on the position of the slider, much like tuning a radio. What I can’t get is how I relate the position of the slider to the position of the movie clip or particular song?

My action script knowledge is pretty basic and I’m a flash amatuer comparatively. Can you help?

Thanks

Anybody? Please!