"Stepped" Click On UI Slider Widget

Hello. I am a bit stumped. I want to add a continuing click sound to a slider widget to fake a stepped input (like a physical slider on a parametric eq) and I am not sure how to go about it.

I was thinking of using a single click and hooking it up to the velocity and movement of the slider, but I have hit a wall in getting it to work.

I am using fmod in this project as well.

Thanks in advance for any ideas.