How can I play my WD playlists on my iPhone?

When I open my WD playlist on iPhone nothing happend. I can play single songs and albums, but not my WD playlists. How can I dop that? I also want to play my lists on my sonos music system.

To use a playlist, the playlist needs to point to songs alredy stored within the WD My Cloud by means of a DLNA Media Server that supports playlists.

The following thread is also quite helpful when creating DLNA playlists:

http://community.wd.com/t5/WD-My-Cloud/Create-music-playlists-on-mycloud-for-use-by-my-DLNA-AV-receiver/td-p/631245

Regards,