However, drag-and-drop doesn't seem to work other than with Windows OSes both on the host and guest side, so it was a bit of a pain to get everything in there. And I need to set up some of my own software too -- and if I need to make modifications to that, I would need to boot back into Windows to do so.
But hey, it's a virtual machine! So I copied it over to the Windows side, and I'm now installing my stuff there. When it's done, I'll copy it back to the Ubuntu side, and run it there.