If we weren’t all going to die from this apparently massive, apocalyptic snowstorm that is going to eat our pets and start the second Ice Age, these are the shows we’d be going to see. Where are your musical destinations this week? MONDAY: >> The Finn Brothers, Kiwi nationals of Split Enz and Crowded House fame, take the stage with their classic pop and harmonies at the Birchmere. 7:30 p.m., $29.50. >> If the snow…