I only have to decide where to put it There is a workaround that you can use in the meanwhile: do an "Add, replace and play" from the context menu. Tricky, but it works;
I've already considered some solutions to achieve this feature. I'm going to introduce them in 0.4 or 0.5 version;
I'd like to 2nd this request, it would certainly make the playlist 100% more useful. I'm glad to hear the option is being worked out. Keep up the great work!