Launch iTunes. If the songs you want to edit aren't already in your iTunes library, add them by dragging them into the program window. Create a new playlist. Go to "File" then "New Playlist" and drag in the songs you want to edit if you are having a hard time keeping track of them.
Right click a song in iTunes and select "Get Info." Click the "Info" tab.
Click the text below each field (such as "Artist" or "Album") and type to change the information. When you are finished, click "OK."
Download and install Mp3tag. Launch the program after installation is complete.
Click "File" then select "Add Directory." Choose a directory with MP3 files you want to edit and then click "Select Folder." The songs in that directory will appear on the right.
Click a song on the right side and the ID3 tag information will become visible. Click the fields you want to edit and type the information you want. Go to "File" then "Change Directory" to select new files to edit, or "File" then "Close" to exit the program.
Download and install ID3-TagIt. Launch the program after installation is complete.
Click "File" then "Add Directory." Select a directory with MP3s you want to edit and click "OK." Alternatively, you can navigate the folder tree on the left to find folders with songs you want to edit. After selecting a folder, the song names will be displayed in the middle pane of the window.
Double click on a file to edit the tag information. You can also edit the basic information (artist, title and album) in the "Quick Edit" field on the right side. When you finish, click "File" then "Quit."