For those who are interested, I just saw that the Wolfgang's Vault website has a special download price today for the Fleetwood Mac Chalk Farm show from 24 April 1970:
http://www.wolfgangsvault.com/fleetw...ampaign=100309
They're charging $4 for an mp3 download or $6 for FLAC. I get email notices from Wolfgang's Vault and spotted this in the one I got today.