Sonic Helps Align World's Leading Consumer Electronics, Computer, and Entertainment Companies for HD Launch

Sonic's HDAA - AG to Help Ensure the Seamless Introduction of High-Definition Formats

Novato, California (April 21, 2006)-Sonic Solutions® (NASDAQ: SNIC), the leader in digital media software, is augmenting its well known High Definition Authoring Alliance (HDAA) with an Advisory Group (called the HDAA AG) and, in doing so, is aligning leading computer and consumer electronic (CE) device manufacturers facilitating next-generation format playback with top-tier Hollywood content holders. The result is a multi-industry cooperative that will test and validate user interactions with the new high-definition formats and help deliver reliable, consistent, and exciting viewing experiences across multiple platforms.

"Sonic has played a major role in empowering artists and companies both large and small with DVD and CD authoring tools and interactive technologies. Sonic's relationships with consumer electronics companies, studios and creators makes the company ideally suited to found and lead the HDAA AG with new tools, resources and opportunities," said Richard Doherty, Research Director for the Envisioneering Group. "Sonic's expert-level knowledge of HD-based formats, particularly in the area of advanced interactivity, will help unite the entertainment industry during this crucial stage in the rollout of interactive, engaging HD capabilities."

HDAA and HDAA AG members have access to evaluation software to test content for standard and advanced playback modes. In addition, members are able to attend HDAA meetings, participate in technical forums, and review research, in-depth documentation and test findings contributed by HDAA and HDAA AG members.

Sonic formed the HDAA in July, 2005, to help leading authoring facilities such as Laser Pacific, Deluxe and Technicolor Creative Services prepare for the release of Hollywood next-generation titles. With the formation of the HDAA AG, authoring houses are now joined by leading CE device and personal computer manufacturers and collectively represent the high-definition value chain from creation through consumption.

For a current list of HDAA-AG members visit: http://www.sonic.com/go/professionalHD

"We're very proud to have the opportunity to take a leadership role in enabling the content creation industry to make a successful format transition," said Rolf Hartley, senior vice president and general manager for Sonic's Professional Products Group. "The work of the HDDA and HDAA AG will help ensure that the high-definition formats deliver maximum performance and optimal compatibility with the release of the first players."

About Sonic Solutions
Sonic Solutions (NASDAQ: SNIC; http://www.sonic.com) is the leader in digital media software, providing a broad range of interoperable, platform independent software tools and applications for creative professionals, business and home users, and technology partners. Sonic's products range from advanced DVD authoring systems and interactive content delivery technologies used to produce the majority of Hollywood DVD film releases, to the award-winning Roxio- and Sonic-branded CD and DVD creation, playback and backup solutions that have become the premier choice for consumers, prosumers and business users worldwide. Sonic products are globally available from major retailers, online at Sonic.com and Roxio.com, and are bundled with PCs, after-market drives and consumer electronic devices. Sonic's digital media creation engine is the de facto standard and has been licensed by major software and hardware manufacturers, including Adobe, Microsoft, Scientific-Atlanta, Sony, and many others. Sonic Solutions is headquartered in Marin County, California.

Sonic, the Sonic logo, Sonic Solutions, Roxio and AuthorScript are trademarks or registered trademarks of Sonic Solutions or its subsidiaries in the United States and/or other countries. All other company or product names are trademarks of their respective owners and, in some cases, are used by Sonic Solutions under license.