Cailean MacLean’s last broadcast as presenter of ‘Crunluath’ the Gaelic piping programme is on Thursday (Dec 14) at 4pm. Cailean is stepping down after 20 years at the mic. I don’t know who the Beeb has lined up to follow him but his are a difficult set of brogues to fill. Cailean was also the piping convenor at the Skye Gathering for many years, a post now held by Cameron…