this might solve the issue i have unless there is another way around it. I hate the fact that to send a song to a playlist you have to right click select "send to playlist" (or use a keyboard shortcut) and then select the playlist from a drop down menu. drag & drop would be great!

You can drag-and-drop tracks with your right mouse button in both Default User Interface and Columns Playlist.

how do i drag a song from a playlist eg broswer to another playlist?

Drag the tracks on the respective playlist tab or Playlist Switcher entry.

In Columns UI, you might want to enable the option "Switch playlist when dragging items over tabs or panel" at Preferences, Playlist switcher.

thanks for your help, only problem is i use playlist drop down instead of tabs

And you could not mention this "detail" in your first post?