I like the way to be able to rent music like this. But I wish I was able to play the music from Spotify through my Airport Express via AirTunes and not just through my macs small speakers. I know I can use AirFoil to stream the music, but AirFoil isn't that stable in streaming the music and I get a lot of dropouts in the sound when using AirFoil. This doesn't happen when streaming from iTunes to the same Airport Express so it must have something to do with AirFoil.

Spotify should build this feature into the software!