WRAPUP 7-Cockpit voice tape hoped to unravel Airbus crash riddle

SEYNE-LES-ALPES/PARIS, March 25 (Reuters) - Investigators have retrieved cockpit voice recordings from one of the black boxes of the German Airbus plane that smashed into the Alps, killing everyone onboard, and they expect a preliminary read-out of their content in days, an official said on Wednesday.