How do you rename a song on iTunes?

In iTunes you can change all the song's details in its Info section. Select the song you want to change and either press the Command key (cmd) and I (for Info) or right click on the song and select Get Info. Under the Info tab you can edit the information about the song. Click OK and you are done. Use the Sorting tab to set up how you want the song sorted in the library - if you prefer your artists sorted by their last name rather than their first.