Ok, probably I already told some of you.
As some nice guy told me in #klchat (now: #kchat, irc.p2pchat.net:6667)
the word "KaZaA" should mean russian female goat. In polish - as I know - it
is "kosa" or "Koza" (sorry for my bad polish but write as I hear, was born in nuremberg) - and melking the goat means "sharing files, downloading/uploading
or getting files.
thanks anyway, david.