I "rediscovered" Bitzi today; doing a ctrl Click on the LimeWire "Quality" icon in the left column of the download window (tiny letter sheet w/a check mark) I chose "Advanced" in the drop menu, which item is: "Lookup File with Bitzi."
Landing on the Bitzi web page I saw dozens of Bitzi-processed files, many LW, titled "BOOBYTRAPPED, SPAM, KILLER, TROJAN HORSE, etc., and, many curse words embedded in the operator notations recommending various fiery hells for the human sacks responsible for adding phony extensions (mp3 e.g.) to infected/malicious/virus-laden downloadable files, the very files we are struggling to open/play/convert in LW, FW and others. A ctrl Click on the "Rating Stars", >"Advanced" creates the same path to Bitzi.
You all know this right? I didn't. There is no question as to where these files come from and it is quite deliberate; Bitzi operators are furious and despairing both, the "bomb-throwing" Hosts change their IPs multiple times per day.
Apparently, the "Bitcollider Utility" Bitzi offers free, will scan and identify a file's true file-type. One of my dirty LW files, "Bitzied" is below (with the identifying alpha-numeric sequence "greeked").

(Bitzi Unknown Bitprint

Thanks.