Limewire 1.3 keeps on trying to load the file u have asked for, untill u "Kill Download" . I know of no way to restart once u have done that. The"incomplete" folder is files that are not complete, da, they are of no use and should be trashed.
Don't Kill the download if its getting any thing , give it time and it may complete. I have seen it take hours to down load 1 MP3 file.
Walt