Now you don't have to choose between either mono or stereo. Just choose, how much of the output should be mono and how much stereo.
I find it useful for DJing, when the stereo separation of some songs is much too high, i.e. certain instruments appear mainly in one channel. By decreasing the stereo level of the signal with this plugin, the instruments are distributed more evenly between the channels without loosing the stereo ambiance completely.
Works just as described with no problems. Select the amount of separation that you need and enjoy.
Minor thing is that the installer could prompt where to install to (was not clear where they had gone if you have multiple installs).
A decent little dsp