Luckily, there are a number of methods--some free, some with small costs--that can make this process easier.Home Sharing, available in i Tunes 9 and higher, allows i Tunes libraries on the same network to copy items back and forth.Whether you have them organized in multiple folders in several locations or if you simply have a folder for music and videos, the files themselves are not located in the same folder.
The fine specifics of how to consolidate your i Tunes library may vary slightly depending on which operating system and version of i Tunes you’re running, but variances from the directions given below should be slight.
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.
Due to the large size of most i Tunes libraries, consolidating them isn't as simple as burning a CD and loading it on the new computer.
Your i Tunes library is a set of commands that the application uses to find where the song or video that you want to use is located.
The library is thus a list of references to locations on either your hard drive or another computer (if you are part of a local network). Whether you are creating an i Tunes library from one computer or various computers in a network, you likely do not have all of your music and video files in one location.