duplicating multiple songs w/in a playlist

[mctrees02]

In previous versions of iTunes, I could make a playlist of X number of songs and then copy/paste them back into the playlist (effectively creating a manual repeat). However, I can't figure out how to copy/paste in iTunes 11 without re-dragging every song back into the list.

The reason I'm doing this is for walkup music for a team. Some people like different songs each time they bat while others want the same song every time.

Does anybody know how to duplicate multiple songs within a playlist?