How to refresh metadata in iTunes? I've updated much of my songs' metadata using MusicBrainz Picard and it's successfully updated in the .mp3 files. However, a song's updated metadata is not reflected in iTunes until I play it. Is there a way to refresh this data for all the songs at once.

Also, just for testing, I dropped a music folder into iTunes. Instead of updating the song's metadata, it added the songs again and now I have duplicates.

PS: I am on Windows 8.1
Found a VBA Script here :
http://samsoft.org.uk/itunes/UpdateTagInfo.vbs

You can find many other scripts there too:
http://samsoft.org.uk/itunes/scripts.asp