Nothing to say against iTunes plugins, I downloaded the small zip-file which unfolded easily. Inside, you'll find the plugin plus a small readme text file. Installation is as easy as dropping the plugin into the iTunes plugins folder, however I'd expect this to be scripted if not available as a standard installer. That an "3" for "ease of use", as far as installation is concerned.

After an iTunes restart the plugin appears in the list. My iTunes crashed when I tried to change the color values in the plugin options, so I stopped trying that and gave it a "2" for stability. The plugin display is somewhat boring, surely it's just supposed to draw EQ bars on the screen, but it does it in a C64-ish way, with just some flickering box frames. No OpenGL, no colorful experience, no innovative ideas... hat's why I gave it a "2" for "value". Since you can't do much more with it, it's got a "2" for features, too.

All in all, it's kinda useless, unless you like to stare at some dancing grey boxes. Personally, I don't.