The SoundTouch app can only stream music from Spotify using their Spotify Connect feature. This feature is only available to Spotify Premium users and cannot be used as part of the free version. The SoundTouch 30 is one of our products which supports AirPlay. So using a direct AirPlay stream from an iOS device may be a work-around for some users. Other devices will typically not be able to do this however, since AirPlay is a proprietary Apple technology.