Playlist always empty -

[Frisk]

I’m using windows 7 (64) and Samsung GSIII with additional sdcard– every time I sync a playlist I see the files transfer ok - undock it – go for a walk and find the playlists are all blank . I can play files from the just added section but there all called “unknown” this used to work on my old HTC. It’s annoying I used to like winamp . Does anyone know what I’m doing wrong?
Playlists always empty and every track is "unknown"