If you miss it when it's broadcast, have no fear – it will be available on the web not long after. I'll post a link when it's available.
There are a wealth of interviews with New Zealand authors available on the Radio New Zealand site, now that they are keeping them on the site indefinitely. Seraph Press-related interviews already on the site include one with Vana Manasiadis about Ithaca Island Bay Leaves: A Mythistorima, and one with Helen Rickerby, manager editor of Seraph Press, about her poetry collection My Iron Spine.