Hm ... I didn't download the torrent so I have no idea what was the quality of that share, however for a long time I had the probably best circulating version, transferred by myself from a tape I got from an Italian fan ... I'll check my external disc and if it's worth I'll up it here
You can grab the better version here - link
But it's still not definitive, as Great King Rat is only 2kb or something... pilot error on someone's part. The recording apparently came from that Queen hub, which means it could've come from anyone..