Nah..
Just pick a channel from the vcr, left or right...(white, or red) and hook it up to the audio input to the tv... the kids will never notice any difference at all. No problem to either the vcr, or the tv. Better yet, just hook up a coaxial cable (regular cable hook up) from the RF out of the vr, to the RF in of the tv, and the composite signal will include audio....no prob.