how do you make it to where when you approach a object it plays a sound?

I made a fireplace but I want people to hear fire crackling whenever they get close but how do I do that do I put the sound in the part or what?

Easy, basically, put the sound i n the fireplace, in any place, then, in the script, put the script in the sound first off, then in the script put:

local sound = script.Parent
sound:Play()

the rest you can find out about on the roblox wiki by typing in "Sound" on the roblox wiki search box.