Depends on the band and their rules on taping and sharing.
Sources to watch:
Hittin' The Web forum for ABB recordings, B&P & vines only
also
http://lists.netspace.org/archives/allman.html for ABB recordings, B&P & vines only
Live Music Archive -
http://www.archive.org/details/etreebittorrent sites:
http://bt.etree.orghttp://www.thetradersden.orghttp://www.dimeadozen.org (membership hard to get, keep trying every half hour until you get in)
If this forum stays up, maybe we can do some vines here.