Installing a MediaMonkey 3.0 extension sometimes results in:
"Product installation error."
This occurs on Vista systems when the user attempting to install the
extension does not have Administrative rights.
To get around this, log in with Administrative rights, run MediaMonkey,
and then attempt to install the Extension.
You can run MediaMonkey with administrative rights by right-clicking the
MediaMonkey icon on your desktop and going to "Run as administrator".
If you're in Windows 7 and MediaMonkey is in the taskbar, right click the icon,
then right-click "MediaMonkey" and then Run as administrator.