The i Tunes program, as installed on Macintosh computers, is set to consolidate by default.
If you’re running i Tunes off another operating system, such as a Windows computer, you’ll need to manually set the i Tunes library to consolidate.
This will move all your i Tunes media files, from wherever they are stored on your computer, to the i Tunes folder.
As that happens, you'll need to know how to consolidate i Tunes libraries from multiple machines into a single, large i Tunes library on the new computer.
It will maintain various files which will contain information about the content in your library.
Every household does not require more than a single computer that can run i Tunes.
If you have spent a lifetime rating all of your songs and videos or make use of the ‘most played’ playlist that i Tunes automates for you, you’ll be unhappy to see all of that information disappear. This will create an XML file that holds the playlist and rating info on each of your songs, videos, etc. Select the file ending in (in my case, “i Tunes Music Library.xml”) and click Open. Now that your Computer A’s library is successfully saved on the EHD, you’ll need to import it in Computer B’s i Tunes. Connect the external hard drive (EHD) to Computer B. However, if you are among those who choose to pay for benefit of combining your i Tunes libraries, you do have another method you could use.
Luckily there is a method of merging your i Tunes library without losing metadata. Select both Keep i Tunes Media folder organized and Copy files to i Tunes Media folder when adding to the library. You will also need to organize your libraries, which will make sure that each of your movies, songs, etc. Choose both Consolidate Files and Reorganize files in the folder ‘i Tunes Music’. Make sure all of the file types you’d like to export are checked off, such as Movies, TV Shows, Podcasts, i Tunes U, etc. **So as not to be so confusing, I’ll be referring to the computer or user you are moving the library from to “Computer A” and the computer that you are merging the two libraries on as “Computer B”.** , you’ll be able to save yourself a step that can be fairly time consuming (transferring one entire library twice). All of the media files (music, videos, etc.) and its important data will move over to Computer B. Connect the external hard drive (EHD) to Computer A. In i Tunes on Computer B go to File-Add to Library. There are a number of programs that can do the job for you.