Recently nokia announced the opening of a slew of music store sites for some countries(Not yet in the US)

http://musicstore.nokia.com/

One good feature of the music store is that with a pc you can stream any song with a monthly 10$ plan. Now as of now this is available only for the pc and with IE 6 and above(no firefox)

So when nokia eventually releases the US store and also compatibility for firefox...... it will be a great asset to the internet tablets as we can stream unlimited music through it!!