Creative's US shop doesn't sell the drive bay, unfortunately

.
I'd consider that other solution, but I don't have a soldering iron (and even if I did, I wouldn't know how to properly use it) or know much about electronics

. I'd be willing to pay if someone else wanted to make it for me, though...
That Hoontech add-on card looks like almost the ideal solution, but it appears (not sure) to just support the Live! and Audigy 1

.