Well... You have (at least) two options. Get the source from limewire.org, build and run that. Or, kiss $6 goodbye and have limewire.com do essentially the same for you. I preferred the former, since I had doubts about how much good that $6 would do for the entire opensource-limewire-crowd out there (not just those on limewire payroll).

BTW. Great work, guys and gals. I got the source, installed Ant, and expected a bunch of trouble to get the thing going. But no, everything built like a dream. Nice! Then I spent about 2 minutes browsing the source for the place to disable those adds... Heh. Couldn't find it immediately, so I fired up the client and voila, it was already gone.