Make rolling sound when ball moves

I am a 100% newbie. I can’t find anywhere with a working script to make my ball make rolling sound when its moving in any directions. it would be really helpful if you provide me with anything so i can expand on that.

Look at this: Unity - Scripting API: AudioSource.Play
Whenever the user presses an input key put the script in on the link.

thanks i also found this to help me out. Unity 3D - How to add Footsteps with sound [C#] - YouTube