From the official Microsoft News Center:

Microsoft and KEXP have teamed up to give the station a “technological makeover” from the inside out, employing software and services such as Windows Azure and Microsoft Dynamics to streamline everything from the way employees and volunteers communicate internally to the way listeners worldwide interact with music. The makeover will take place over the course of three years, though some of the improvements will launch this spring, and fans of the station will soon see changes in the way they can interact with the music the station plays and a wide-range of supporting content that has been hard to find up to now.