Unknown Artists in Music Player?

A

AC Question

I have a samsung Galaxy s5, and i recently decided to add my music onto it through windows media player. However, when synced, not all of my tracks show up with the album art and the artist (it simply states <unknown artist> as the music artist), when in WMP all of the correct information is definitely there.
Is there any way that I can solve this problem, so that my tacks can be organised by the artist and show the correct artwork?