iTunes Folder Watch is a companion for iTunes versions 6 onwards. Are you frustrated that iTunes does not automatically detect new tracks in certain nominated folders and add them to the library automatically? iTFW to the rescue. It allows you to set up Watch folders and to evaluate whether there are any new tracks in them which do not exist in iTunes, and allows you to add them selectively or fully automatically.
||Free to try
||Microsoft .NET Framework 2.0, iTunes 6.0-10.0