Thanks Rick. I already had it enabled, that's why I couldn't figure out why nothing was appearing in my Playlists.
But alas, there it is. You are right. You have to first replace the Playing Now playlist before the saving business will kick in. And it never displays the Playing Now playing list you are currently listening to. It will create that one when you replace it next time. I'm sure I knew that before, but forgot!
Here's a little tidbit on why this is a good feature.
We sometimes play a game whereby we play a tune and the next person has the duration of the tune to come with with the next song. It must be a seamless transition. Anyway, we all know the results of having someone inexperienced with MC play a song. It most likely results in the previous songs all disappearing from the Playing Now playlist! I've modified all the play behaviour to always ADD to playlist, but just in case someone does something wrong (wink) I like having the history of the game so that I can save it at the end of the night.
Also good for creating regular playlists... you can test some out and then revert to a previous one if you like.