How to move not copy files into iTunes I have a folder containing all my Music, Movies etc. This contains various formats of music file, including some that iTunes cannot play (i.e. flac and oggs) but a lot of mp3s.

I'd like to have iTunes import all the formats it can play, moving those files into the iTunes Media folder, but leaving behind the files in formats it isn't able to play.  That way I can decide what to do with those files later, but the rest of my media is managed through iTunes.

The option in iTunes preferences copies files into the iTunes Media folder, but leaves behind a duplicate.

Am I missing something, or is there a trick to this?
iTunes never deletes original files. But you could use a simple script to remove the mp3/aac files (which are supported by iTunes). 

But if you uncheck "Keep iTunes Media folder organized", files will be read from their original location without being copied;