The iPhone and Android versions of Spotify’s mobile app may have gone live today, but now the company has published a video demo of the third version, for S60 phones. S60, in case you’re wondering, is the mobile operating system used by Nokia’s smartphones, as well as a smattering of other manufacturers. But to all intents and purposes, this is about putting Spotify on Nokia handsets.The company makes it clear that the app has a way to go before it’s finished, so it’s anyone’s guess when it will become available on Nokia’s Ovi Store and other distribution channels. Like the iPhone and Android versions, the S60 edition will require a paid subscription to work. In terms of scale, it could be the biggest of the three apps, given the hundreds of millions of S60 handsets out there.