I'm experiencing issues with the plugin. A dialog pops up notifying me about the active x script, but more importantly, once it runs the window width extends infinitely right, prohibiting me from scrolling over horizontally to reach the edit icon.
See video: http://www.youtube.com/watch?v=khwiKeWZw3w
It looks to be a very useful plugin. One additional feature might be instead of having to choose one classification method (artist, genre, mood, etc) to have tabs that allow for easy switching of the classification method.