The first alpha version of the new standalone quizzer went alpha last night. If you are interested in selling flashcards using this new quiz system, please send me an e-mail and we can talk about getting you into the pre-release system.
So far, I've created a Spanish language set with it and have been using it myself for the past month as I try to learn Spanish and also make sure the quizzer really works as a learning tool.
Here is a screen shot of the quiz window. No one liked the green buttons in an early mock up and I'll be changing that soon. Opinions welcome.