They are a more complete representation of the original sound than a mere stereo file, further beyond stereo than stereo is beyond mono. Quite apart from the admittedly rare case of simply using them for more realistic reproduction of a concert at home, you have already been told of their use in applications that demand a sound representation that is isotropic in three dimensions so that it can be rotated around any axis in response to the listener’s movements - such as gaming and virtual reality, which are a marketplace which I guess is now approaching the size of that for music as a whole.
And I don’t want to use other programs because they are not more suited to my work (and also I don’t want to pay to somewhat duplicate facilities). I am trying to get across that I don’t want to do anything different with my four-channel files than you want to do with your two-channel files, and WaveLab will suit me perfectly once this missing feature is added as promised.
Paul