Certain songs in Playlist won't download to android phone

[anphex]

I've got a playlist for my local files to sync them with spotify on my phone. Everything works fine, but some songs of the exact same artist/album won't download and aren't event playable. It contains japanese Kanji, but many other songs in the list too.

It only applies to the songs by this same actor seen in this screenshot: 

http://puu.sh/k1jFJ/69ad984484.png

Licht und Schatten, Küken, Krieg and many more just don't work on phone. 

Any ideas how to fix this? I can't even imagine what might cause this.

[Skellingtor]

Hello!

Have you tried copying those sings to a new playlist and see if the problem persists?