WPP has launched Xaxis Audio, the UK's first programmatic product for digital audio ads with leading radio broadcaster Global. Xaxis Audio uses Global’s new Dax platform to enable advertisers to buy digital audio ads at scale from more than 130 publishers including Audioboom, Blinkbox, Jango and Rdio. The new product will run through Turbine, Xaxis’ next-generation data management platform (DMP) that allows advertisers to reach highly targeted audiences in real-time.