How do you change your iTunes from one computer to another?

For the computer with the music... Open iTunes On the menu bar, click Edit->Preferences... | Select the sharing tab | Check "Share my library on my local network" | You can choose to share the entire iTunes library or selected playlists and make a passWord For the computer you are trying to access the shared music... If the library doesn't show up, go to Edit->Preferences, select the sharing tab, and check "Look for shared libraries" This tutorial is for Windows, and may be slightly different on a Mac.