This is so important! Please make this happen 
I nearly can’t belive this is not yet implemented after all the request is nearly 2 years old…
And i’d say it is even more annoying with MP3-Playlists, as I stated here:
Move multiple Items on Playlist (don’t vote for that. I really didn’t see this previous post here)
Thanks for considering this feature for a (near) future version. 
