cover art chaos

ok so on i tunes i have all my album covers almost exact to the albums ,until the other day when i noticed somthing had changed with a couple of albums.

this changed to this

this changed to this

this changed to this

& this changed to this

weired thing is it was only changed on the apple tv my classic  is ok and so is the i tunes library on the pc.so i selected each album on the library and re-pasted the 4 albums with the correct art even though it looked ok on the pc

i then re-synced the apple tv and it changed the big cover flow art but not the small artwork in the album list.

any ideas how to changes this without deleating and re riping.