What technology does Songza use to play continuous audio while navigating their site?

Question

When I use Songza, I can navigate the site and the audio keeps on playing. What technology do they use to accomplish this. Pandora also does this. They both change full URLs as well.

Answer 1

Haven't used Songza, but from what I can tell of Pandora, they don't actually change the site, it's all (more or less) on one page.

The content is changed using things like jQuerys load() function .

The url is changed through javascript as well, with methods like pushState