Bill Condon , director of “Dreamgirls,” “Kiss of the Spider Woman” and the $1.26 billion-grossing “Beauty and the Beast,” knows how to film a musical number. That made him a natural choice to helm the “The Road Home,” starring Cynthia Erivo, Thabo Rametsi and Guy Pearce. Palisades Park Pictures launched international sales at Cannes. It’s the story of how Paul Simon and numerous South African artists navigated anti-apartheid boycotts to create one of the best-selling albums — and most politically significant tours — of the 1980s. Just don’t expect its real-life characters to randomly break into song. “It’s not a musical, but a deeply emotional story that’s enhanced and told through some of the greatest music anyone’s ever heard,” says Condon, enjoying a glass of local wine in Cape Town, South Africa, after scouting locations for a June start.…