Harmy said:
Download the other parts and try it again later - the links sometimes go bad for a bit but then they get back to normal. Or try downloading that one part in your browser. Also, I recommend using FreeRapid Downloader for uloz.to - it fills in the captchas for you automatically.
I ended up downloading in my browser. All the problems may have been with Jdownloader, which doesn't seem to want to play nice with my PC. Or I just plain don't know how it works.
At any rate Star Wars 2.5 and Empire 2.0 look pretty great. I can't even imagine how much work it took to create these. Thanks for the effort.