I have built from CVS using ant before. The reason I decompile the file instead of building from source is that I want to use the official version that LimeWire released, just without the flashing ad banners. And I don't know how to check out their code based on some kind of release version label so I get a release instead of the latest, possibly broken code. aIt also takes forever when I've checked out the code from CVS in the past.