From this getsatisfaction thread:
https://getsatisfaction.com/spotify/topics/please_make_browser_based_spotifyAndres
(Employee) over 3 years ago:"We have no plans to make a browser based
version, we feel we can provide a much better product with an a...
...o restart their browser. Another approach to get Spotify to the web is to use Native Client (NaCl) to compile C/C++ code for the web. An example is the game Bastion that was c...