Maybe this will give you info on the concert tapes you are looking for.

Victorian Folk Music Club inc

You can contact the VFMC and they may be able to point you in the right direction to find a copy.

While you are at that site you might want to also look at the history of Nariel Creek Folk Festival, which is the oldest folkfest in Oz starting in 1964, and which we didn't quite get to in December last year but managed to get to the post-festival few days of camping with the stragglers.

Helen