Quick, what’s the hottest, must-have ticket in tech? No, it’s not Android, Thunderbolt, or even Google TV. It’s Spotify, the streaming music service that split the licensing atom to release virtually all the planet’s tunes –– over 13 million tracks and counting –– to users anywhere. Well, not quite anywhere. Since Spotify launched in 2008, it’s been available in only a handful of lucky European countries, and despite frequent rumors of an imminent American launch, we’re still waiting to be freed from the tyranny of managing downloads and backup solutions.