The 7digital Android SDK by 7digital allows developers to integrate the 7digital API's preview streams, music charts, music metadata, search, and purchasing into their Java-language Android applications.
Stereomood is a streaming music service that gives recommendations. To start, it uses a list of moods, each of which have an associated playlist. While playing songs, users can like or ban songs, much like Last.fm or Pandora. The Stereomood API allows full access to the site's functionality to developers, allowing developers to make fully usable clients on any platform.
In what might be a first in the world of open APIs and mashups, a developer has been sued by a major corporation for developing an application using a third party web service API. As TechCrunch's Jason Kincaid reports, Ryan Sit, the talented developer behind a number of popular mashups is being sued by EMI for his application Favtape because it uses the Seeqpod API. Of course it's not unusual for a record label to aggressively use the courts to defend copyright, but this appears to take the battle to a new ground. As Jason describes: