How about some kind of "favorites" function?

Here's what I imagine:
Mark a track (e.g. a short Vocal or any kind of teaser) as Favorite 1 - 6 and then you have to possibility to load this track by just pressing e.g. Alt + F1 to F6 (for the left deck) or Alt + F7 to F12 (for the right deck) from anywhere on your library (or any other free shortcut with the F-Keys).

Now the main feature request: If you have loaded one of your favorites on one of the decks, the same shortcut will load the previous track, so you don't have to search again. I would pretty much appreciate such a feature! *yes*