The three playlist managers are from Wyldanimal, Starryk and gatonegro. Each of these accesses the Windows Registry to identify the currently playing clip.
I have a Microsoft Access application that builds a database of card and clip information and lets you add tags to both the cards and clips. Unfortunately, because I us a Mac, it does not have the ability to read the Registry. It's still in beta testing, but I'm willing to email a copy to anyone who is interested. Send me a Private Message here if you are interested.