Jer White at The Pansentient League goes over some of the other changes Spotify made this week that coincide with their Facebook integration:
It seems that new users now must have a Facebook account before they can use Spotify.
The proof is on Spotify’s Get Satisfaction topic.
Want to try out Spotify but don’t want to open a Facebook account? Darren from Spotify suggests this workaround:
This does not stop you creating the Facebook account adding nothing to it and making it totally private as the Facebook account does not have to be actively used.