Spotify web client, really everywhere !

Web client, that's it, simple, develop a web player, accessible from the web.
something technological like youtube, or deezer

two issues solved at once :
- using a computer in which you can't/wan't install any software (work computer, share computer, not supported OS, etc...)
- windows mobile users would have at least an opportunity(we are a lot), even it is far from being as good as a dedicate application android alike.

and sure there is more benefits...