Updating id3 tag information with itunes
This method is a bit more complicated to set up, but easy to use.
i Tunes tag, also called i Tunes ID3 tag, is the metadata or information like artist, album, genre, year and so on.
Paste the following code, then save as a Script called /Library/i Tunes/Scripts/(create the Scripts directory if it doesn't already exist).
Now, inside i Tunes, you should see a Scripts menu (an icon of a scroll, just left of Help).
If you can use the Sony walkman app, that is the best solution for you. If that app is not compatible with your device, Album Art Grabber would be a good solution for you.
Music Tagger is a music tag editor that introduces automated features like lyrics grabbing & album art grabbing to make the process of tagging your song files quick and easy.Know that this will cause i Tunes to lose track of where all of these files are; meaning you will have to re-add them to the library (manually), which will take you hours and which may mean you will lose play counts and any other information that i Tunes keeps in its own library. Click "Next" (or Cmd N/Ctrl N on the keyboard) repeatedly, until you've passed the last track.