Hi!
I would like to sync (not copy) some playlists to a USB stick. The playlist and its contents. And if I would add some songs to a playlist and start a sync, the playlist on the stick should be updated and the new songs should be added to the stick, too. And removed songs should be deleted from the stick, too - if no other playlists on the stick use them.
I would really like to use Amarok for this - but I didn't find a way to do this.

I am afraid there is currently no way of doing this with Amarok, but should be added to the wishlist IMHO, sounds like a cool feature. You can add it yourself for the saved playlist section here: https://bugs.kde.org/enter_bug.cgi?product=amarok