Just found an Excellent product from Air Turn: http://www.airturn.com/
These are totally silent foot pedals for a variety of uses. I just got a simple configuration of 2 pedals, a non-skid pedal board and a cable splitter ( less than $ 48.00 including shipping). Used my own adapter for mini stereo to 1/4 inch stereo plug…and it WORKS beautifully ! No clicking, no sound at all. Check them out !
Also, if anyone uses backing track set lists on a laptop, tablet, etc…check out the quad version with Bluetooth. They can customize the controls for you ( for like $ 5.00) and let you scroll up and down the list, start and stop selections (ie: MP3 list in Windows Media Player). And these are the same silent pedals.