I attended 4 of the BSS quad shows. Incredible sound at the time. There was a press release around 2002 or 2003 by warner music group that WBMFTTSTNE was going to be released on DVD-Audio. I called them and the person I spoke to would not confirm it was true. The ELP archivist, the late Tony Ortiz, said the multitracks were lost. I contacted the company that recorded the live show (the name I can't recall at the moment) and the guy said they no longer have the tapes. I remember calling the company that released the triple LP set when it first came out (I got the import before it was released in the US) and complaining about the sound quality and that the king biscuit broadcast sounded better. The guy I spoke to told me to shove the album up my ass. I told him the most I could fit was a double LP.
Bottom line, there's never going to be a WBMF multi-channel release.