...and, of course, there's really no need for a volume control in any app, since there's already a system volume...

There are cases where you want to have 2 applications running and playing sound, and want to set the relative volume of each...

	▲	XorNot 6 hours ago \| parent [-]
		I mean technically that is a system level feature...and there's nothing really wrong with an application adjusting it's own volume as defined by a system level volume setting for that app.