OTTAWA (CP) - After years of legal skirmishes, Canadians can finally hear the gripping soundtrack for one of the country's worst aviation disasters. The Swissair Flight 111 air traffic control tapes, kept under lock and key since the 1998 tragedy, have been released to The Canadian Press following a tortuous court battle that went all the way to the Supreme Court of Canada. The hours of recordings include 12 critical minutes, starting as the aircrew reports smoke in the cockpit and ending with a last desperate transmission as the aircraft nose dives at high speed into St. Margaret's Bay, N.S.,...