Do headphone volume controls work?

Hi guys

My heaphone remote does not work on the clip zip.  Is that normal?  Does the CZ not support headphone volume controls? 

Seems like a massive oversight if it doesn’t.

No, Only iPods are wired too do this.

Mine does. Are you perhaps using head/earphones with in-line controls designed for iPods?

And certain head/earphones come with an in-line volume control slider or wheel. I have a pair of Sonys that have it. But no other functions (FF, REW, PAUSE, etc.) can be controlled through the headphone jack like on some of the Pods. They take a special set of phones that have this convenience. Unfortunately they sound like ■■■■.