I think that it's problems with the record company. Split Enz were/are with Mushroom, Crowded House with EMI/Capitol/Parlophone, EMI et al were happy for CH club CDs, presumably Mushroom have a problem. I'd also imagine that the recordings would need a fair ammount of work on them due to age, and this would all cost money. Having heard True Colours and Nightmare Stampede from Oddz and Enz on the tape of the concert it is obvious that Eddie Raynor spent a lot of time tweaking the sound, as they sound pretty muddy and awful before. Still, when Peter Green mentions that a desk recording of a concert from when Phil Judd rejoined that includes songs like So This Is Love, Play It Strange, I'm So Up, Home Comforts, Bergan Aun Zee it does make you wish that some would be released! Just how many club members would buy them though? Would they sell at the same rate as CH cds??
Oddz and Enz has Matinee Idyll, Lovey Dovey, Amy (Darling) and Under The Wheel all from Ormond Hall (Reefer Cabaret) Melbourne 31/12/75, and True Colours (Let's Rock) and Nightmare Stampede from the Enz of the Earth Auckland, 1976.