Updating id3 tag information with itunes
This method is a bit more complicated to set up, but easy to use.
Fire up Script Editor (which is under Applications/Apple Script, but it will work with Text Edit).
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.
Now, inside i Tunes, you should see a Scripts menu (an icon of a scroll, just left of Help).To access it, right click on the file you want to edit metadata, and select Get Info (or just press Command I on keyboard).Tips: the Grouping field are specially used to group songs for dynamic playlists. The difference is to select multiple files before access Get Info command.For example, you can create a Smart Playlist to generate a list that just contains the songs with "Oldies" grouping information. You can hold down Command or Shift key and click to select multiple files, or use Command A to select all files.Tips: If you want to clear an i Tunes tag such as comment, simple uncheck the box before comment text field and choose OK to apply to selected files.