Spotify gives free 30 days trial away to everybody.
https://www.spotify.com/nl/freetrial/

You have to use a creditcard or paypal.
It IS free, but just be sure to end the trial within the 30 days!! Otherwise they will charge you 10€.

Don't forget it!!!!

Just wanted to share this with all other N900/N950/N9 users that never used any Spotify app on their devices, so they can enjoy the Spotify apps for 30 days.