The problem with useless Limewire Docs have persisted with this client for what seems to be a year or more (see Limewire Developer's note that it may/may not be fixed with version 2.0 elsewhere). We're still counting right...
The problem seems to be more persistent with large files (for whatever reason) and the fix of changing creator types only works with some files, other remain, as mentioned usually LARGE, piles of junk. To try the creator type trick, get ResEdit and open Get Info to change. Hacked up versions available elsewhere; Apple's old one at
http://www.download.com.
Now, Limewire Pro can't be beat for value, even if you only manage to land one "backup" or listening file, but man are they useless or lazy for not being able to fix this PROPRIETARY problem.
Somehting better will come along real soon and then it's bye, bye to Limewire.