Sorry, it's taking a bit longer than I expected. I'm actually a student at Duke University, and this is exam week. Once summer hits, though, at the end of next week, you can bet I'll be done quickly. Here's a screenshot of the final GUI: http://i29.tinypic.com/rljls6.png
I just need to do a bit of code cleanup and reorganization, a few additional error dialogs, building the file and folder systems, and deciding upon a name and icon.
Recently, I've also added a progress bar (pops out on bottom), a status dialog, saving solution to XML format, variable media size constraints, listview icons, a simplifying algorithm for the generated blocks, and multi-threading so progress bar updates and the app doesn't lock up when performing long operations (e.g. folder size of a folder with lots of subfolders, generating blocks for massive amounts of data). I think I've got a pretty good balance of simplicity, usability, and intuitiveness to functionality and features-ness. And yeah, that beta feedback would be much appreciated when I finish.