Display front cover and back cover


I was wondering is there a way to view the back cover vs the front cover and how do you do this because I would like to have a way to do both front and back cover

You can import covers and set during the import or afterwards what kind of cover this is.
If you do it by action, then you have a list to select the cover type.
If you do it with the GUI then you right-click on the cover and set the cover type.
But this is the way in MP3tag.
Whether you see more than just the front cover (or just one cover) depends an awful lot on the features of your player.