According to the NI manual, the Preview Button in Battery 4 is supposed to:
"Toggles the previewing function on/off. When active, you will hear a preview of the sample currently selected in the Browser."
Yet I cannot hear an automatic preview. Not sure if it is intended to be automatic, but if it isn't, what does it even do?
I don't notice any difference with or without it active; I still need to press my MIDI key (on m32) to trigger a note...