Audio project wrap-up

I gave the kids the first period (45 minutes) to finish their musical compositions. I doubt any of them finished their work, but that's alright. I didn't have a very clear idea of how I was going to assess their remixing skills and now I'm left with a problem. The kids spent 135 min on their projects and I can't easily grade them. How would you (quantitatively) grade a project like this?

I had then planned on letting them answer three questions based on the project and had them answer by posting responses on their class website. Unfortunately, a lot of them lost their questions and had problems with posting their responses. The problem could have stemmed from their servers, our internet connections, or the laptops. Next time, have the Ss open WordPad or someother text editor and copy and paste their responses when they were finished. That way if they weren't able to finish, they could just save the file in the (Y:/) drive.

I showed them a "real-world" example of remixing, ala DJ Q-bert. Unfortuately I didn't have the time to run through the listening exercise. I guess I can save that for next week, when I start the next unit of their semester: photographing? Where am I taking this class?