Hi, im at school. And I want to listen music via youtube with earphones. So I plug them in, but they don't work. So I go to the control panel to set it up. But the audio icon isn't there ( i think they removed it purposely). Anyone have an idea to get the icon back, or listen through the earphones anyway?

PSN name = Barmanation
If it's not there they've probably used a GPO, or something of the like, to remove the control panel access to certain or all objects. There's not much you can do, apart from asking the IT guys/gals at your school if they could enable your sound.
Sworn enemy of the private investigator.