How to transfer music to my iPod (& iTunes) {click on link} I hope this has enough information for your needs.

There is a difference between the LW playlist that appears in iTunes, and the ones you can save from LW that can be opened by other players be it iTunes or another player. The playlist that automatically shows in iTunes cannot be burnt or drag & dropped files from. See the above link for more information about this. But keep in mind you can create & save to HDD your own playlists within LW that can be opened by & burnt via iTunes or other players and burners if you are using LW 5.5 or higher.

I realise due to your Nederlands language background you did not realise this thread topic was "Off-Topic" to your problem.