The worst part about the overly melancholy “Dirt Music,” a real downer of a movie, is that it’s billed as a romance. It’s anything but. The story, based on the critically acclaimed novel by Australian writer Tim Winton, is supposedly one of love and redemption. But a film that’s filled with so much tragedy and a longing for death is not exactly the type of entertainment most would enjoy watching right now. Former nurse Georgie (Kelly Macdonald) is trapped in the backwater fishing town of White Point with the local town fisherman, the ill-tempered Jim Buckridge (David Wenham). Jim and his gan...