The Premium version does let you use the mobile app which is pretty good since you can listen to the Spotify library offline as well. Handy if you do a lot of travelling but want to try out new music. This lack of gapless playback does spoil some albums tho'
For Spotify and general music fans, my old man put me on to a great app yesterday
http://www.wolfgangsvault.com/
Live concerts to stream for free. Mainly classic rock stuff but some great performances in there
Spotify - why?
Because it saves me a fortune by not having to buy the latest 'Olly Murs', 'One Direction', etc album that my daughter is in to for 2 weeks then never listens to again!
It's awesome. As much music as I will ever need for a tenner a month, use it on my phone as well, haven't synced for umpteen months.
Been a spotify fan since the early days!
Had a free suscription until they put the cap on hours per month as i'd use them up in a few days.
Then upgraded to premium , the ablilty to use it on my phone and any computer easily far outweighs the cost imo. I also like the social side of it and the fact i've got about £500 worth of music in my playlists, which get bigger every day, so a tenner a month isnt really all that bad!
Also, premium means no more 'roberto from spotify' getting in the way of the music! :p