Making a lasting hit is one of the hardest things to do in the frenzied world of internet electronic music digging, yet one group has gotten staggering mileage out of just a couple of singles. Sydney’s somewhat mysterious yet quite-down-to-earth-once-you-get-to-know-them duo Flight Facilities wooed the planet with their single “Crave You,” a low-key track featuring seductive vocals from their friend Gisele. They released a remix of Cut Copy here, Holy Ghost! there — but wouldn’t drop their second disco fun time single “Foreign Language” for a whole year, and “With You” a year after that. Each video garnered millions of hits, and whet the duo’s appetite in time for their slew of world DJ tours.