So, the other day I've found out that there is no more "enqueue to playlist" nor "play with winamp" but it was replaced with “sync to device”, “burn”, “add to library”. The take-over was by windows media player and there was not meaningfull way to restore this setting to the before-state.
How can you do it?
First (not sure if it helps) you can remove WMP context menu entries by typing this line into your start->run box:
regsvr32 /u wmpshell.dll
That will probably remove all WMP from your context menus but, who needs that crap anyway. This solution was found HERE.
The slightly better way is to use the tol named "Context Edit" to delete any WMP entry but only for specific file type (ie. mp3).
Hope this article helped.