To give you an idea of how scarce outlet space is around here, to get my stereo (which is turned on 24/7/365) on to a (presumably) grounded line I'd have to move it to one that's already got my air conditioner, space heater, and dehumidifier, 2 of which are frequently running at the same time, on it.
Or, if your stereo has a grounding post, such as your turntable would have (if you're like me and still playing vinyl), you could run a wire from that post to a plumbing pipe.
