[BklynBlue]

Of course, without at least seeing the running times, or preferably hearing the tracks, I can't say for certain, but I strongly doubt that any of these tracks are previously unreleased.
The single version of "Man of the World" was released on the "Jumping at Shadows" compilation -"Long Grey Mare" with John McVie on bass is probably the second BBC recording of the song from April 16th 1968 - found on "JAS" and "Show-Biz Blues" (the first version, also with McVie, from 1967 is on the "Live at the BBC" collection)
The rest are almost certainly also from the "Vaudeville Years", or the "JAS" and "SBB" collections mentioned previously.
"Black Magic Woman" and "Jumping At Shadows" are most likely the two Boston Tea Party tracks that turned up on those collections and the Snapper reissue of "Original Fleetwood Mac" as bonus tracks
The only ringer in the group is "No Place To Go" - I've never seen that track listed for any of their BBC shows, and it wasn't one they did often in concert - seeing that this was from the first album and it's doubtful that it turned up after the release of the "Complete Sessions" box set and if it did, Mike Vernon wouldn't license it out anyway.
They don't identify it as being from the "Live At the Marquee" but I would lay even money that's where it's from.
It's an interesting collection, but more than likely nothing not "new".