Source: RightsFlow 
Digital Data Exchange ("DDEX"), a consortium of leading media companies, music licensing organisations and digital service providers focused on creating digital supply chain data standards for common use, today announced that several digital music retailers, labels and other rights owners have made strategic commitments to begin using the DDEX content and metadata messaging specification as part of their digital music supply chain infrastructure. The article published on December 10th 2011 may be viewed here.