I don't know if it applies to yours but I had a similar noise, click on pass. side & turned out when I added an xtra clip on calipers , noise went away easy fix just sayin !! And REAL cheap
The click sound some are referring to on the brakes, when your pads wear down they start to make this sound around the half way point. Will go away when replaced on that part or as OLJEDI states, you can add a plate if not ready to replace.
The rears do the same also, just doesn't wear as fast.