Installing plug-ins
Other manufacturers make software, called “plug-ins,†that you can use with iTunes. Some plug-ins offer other visual effects, for example.
Be sure any plug-in you install is designed for Windows (not Mac OS).
To install plug-ins:
Drag the plug-in to:
My Documents/My Music/iTunes/Plug-ins
If the iTunes and iTunes Plug-ins folders don’t exist, you can create them.
If you are a developer creating iTunes plug-ins, you can obtain a development kit at the website below.