Click the "My Computer" desktop icon on the computer's home screen.
Access the "Music" folder tab that will most likely be located in the left pane when the Explorer window opens. (See Tips section for alternative methods to locate MP3 files on the computer if the folder is not displayed.)
Locate the MP3 song title's folder tab in the Music folder, and right-click it to view the available options for the file.
Select the "Rename" option in the collapsible menu. The folder tab's text field will be cleared automatically so you can enter new information.
Type a new name in the text field to edit the MP3 song title. Then, left-click to lock in the change. The new MP3 song title will appear in the folder tab's text field.
Click the computer's digital media player application link on your desktop screen. (If no desktop icon is available, access the system menu and go to "All Programs" or "Programs" within the menu options. Locate the digital media player application's tab within the collapsible menu.)
Go to the media player's library when the application opens. All of the MP3 songs should be listed in the media library for playback.
Go through the media library and locate the MP3 song title you'd like to edit.
Right-click the MP3 song title, and click "Advanced Tag Editor," "Get Information" or "Song Information" in the collapsible menu that will appear to the right of the song's tab. The song's artist name, title, album information and cover art should appear in the Advanced Tag Editor pop-up window on the screen.
Erase the current MP3 song title information. Then, enter the new MP3 song title information. Click "OK," "Submit" or "Apply" at the bottom of the Advanced Tag Editor pop-up window.