Yes I will be cancelling my subscription after the free month because :
1 Official Spotify Windows Phone 8 app poor and no connect to wifi speakers (eg Pioneer XW SMA series) unlike the iphone
2 No app for Windows 8.1 metro/ RT.
3 Spotify web site will not allow streaming to DLNA devices in Windows 8.1 RT or desktop (unlike e.g. BBC iplayer)
Spotify does work with Logitech Squeezebox (RIP) through a wonderful 3rd party app.