I'm not sure, but I think that meizu doesn't read in album art from the tag information (information embedded into your song files).
Instead, it uses external files put to any of the upper explained 3 places, so you'd need to copy them in.
Here is a quick and freely doable method I collected tons of album arts:
You can download the freeware program SoundBase (
http://www.dajukebox.com/soundbase) and it can scan a directory's sound files by tags, then it lists all albums. It has an Art Info tab, through which you can easily browse for album arts. It will save the album art to the directory your sound files were in.
Then, you will need a program named TotalCommander (Shareware) to put all the images into the Albums directory of your Meizu player, where it can see them. Go to your Music directory, then press Alt+F7 for searching and do a search for *.jpg (all of the previously downloaded album art files). When done, click the "feed to listbox" button to put all found files into one tab. Put the albums directory into the other tab in TotalCommander. Select all files that were previously found and move them over to the Albums directory, where your player looks for them.
Select all again, and press Ctrl+M for batch renaming. Use that interface to rename all files to the proper album name at once.