Why doesn't my default music player on my LG G4 see art cover embedded in a track?

A

AC Question

hi, why my default music player on lg g4 doesn't see art cover embedded in track?

every my mp3 has embedded art cover and filled fields 1.artist 2.name of track 3.music style 4.art cover inside.
this is single rip with 2 songs, not album with 8-10 tracks.
(with albums tracks no problems, all good)

all 149 songs has 1 art cover! -why so? my nokia e72, nokia e90 -all good dispayed art cover these tracks.
famous android 5.1 doesn't know how shows embedded art covers in music player in 2015 year??????
 

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