Spotify have announced that Spotify Web Player has now been fully integrated with HTML5. This should be especially useful for those who have problems with the client or whose web player insisted on using Flash. This has been requested for literally years and now they've got round to it. This should hopefully improve performance since the Flash player was, well, unreliable.
I know some here use other solutions like Mopidy, but hopefully this will be useful for someone.
https://community.spotify.com/t5/Implem ... -p/3121497Updated on 2017-11-10
Hey everyone! We can confirm this very popular idea is now fully implemented. The new Web Player uses HTML5 technologies solely. Thanks for your continued feedback in the Idea Exchange!