It seems neat, but you lost a lot of points by not letting us make our own chords.
This is an interesting idea, possibly a necessary gadget for reverse engineering your own chord progressions from scratch if you have a limited knowledge of music theory. For a graphical interface version of information you could pull out of a theory book, this isn't bad.
Interesting concept, but as a music theorist, I have my doubts on the legitimacy of certain progressions...
I can't say the generator is as itself very useful for non-musicians, and is even less useful for musicians, since the chords are for the most part utterly illogical and impractical.
Also, as previously mentioned, the option to change or modify chords would be interesting, especially with the fact that said chords are already sampled.
In any case, interesting concept, but poorly executed.
I like this generator, but part of me feels that there should also be an option to choose the chords for yourself on each of the rows. For example, if someone got a progression they liked but wanted to change just the third chord, there should be the ability to do so. It's still a good program, though.
Wellllll... It's a great gadget i guess, for guitar players :P Sound quality is nice.