Finally, one album one cover in iTune

I was always frustrated by seeing songs treated as separate album in my iTune library.  Today I finally decided to do something about it.  So I looked into the internet, and found that the reason I got that problem is because these songs have different album artists.  Suddenly it becomes obvious, because a lot of these albums are by various artists.  So the solution is this:

• In iTune, select Album List.
• You will found that there are songs that are supposed to be in the same album, thus list together in album list, but then each has a album entry.  Select those songs, right click, and select "Get Info".
• Now change the "Album Artist" of all these songs to a same value.  I use "Various Artist".  Notice that it won't mess up the existing artist for the song.  It just give iTune the signal that "hey you can treat all these songs belonging to the same album, because one album has only one album artist.  Commit the change.
• If you found that nothing has been changed, that's mostly because (especially in Windows machine) the file is protected and thus cannot be changed by the system.  What I usually do is selecting my whole music folder in the file system, select property, select security, and apply all the right to "Users", and that usually solves the problem.
• The BEST part of this is that the change is made on the file level, direct on the ID3 Tag of the file, so that you put these songs files in another music management software or any mp3 music player, and they will recognize the setting you made.  Your hard work is being preserved and not stuck in the Apple world.