conversatION,”  the monthly public affairs program produced by WBPX-TV, the ION Network station for the Boston area is set for the holidays.  In November and December, host Rod Morrison will converse with Sam and Kristina von Trapp, grandchildren of Maria and Georg von Trapp of the famed “Sound of Music” family!  Sam and Kristina will talk about the Trapp Family Lodge in Stowe, Vermont, it’s history and how and why the family traded in the “notes and scales” for the “slopes and trails.”  Also the conversation will attempt to separate the truth from the “Sound of Music” story and how the “real’ von Trapp’s viewed the movie and stage play.   The program will air in Boston on WBPX-TV, ch. 68,  in Concord, New Hampshire  on WPXG-TV, ch. 21 and on Cape Cod on WDPX-TV ch. 58, at 9:30am on Christmas Day and then again at 6am on Thursday, December 30th..  Check local cable lineups for exact location on the dial.