I have seen on a couple of pre-amps the ability to do m-s summing when recording stereo using the m/s technique. If I record two tracks (one mid, one side) using this microphone positioning technique into SONAR, do I need a special m-s summing plug-in? Or is there some simple way to make use of these two tracks to do the same summing that would have been done by the aforementioned preamps? I've been wanting to try out m-s stereo recording but have never seen an explanation on how to bring the two components together other than by hardware. Thanks in advance for your help.