Sonic Unveils Industry's First HD-DVD Application Development Tools; AuthorScript Recording and Playback Software Development Kits (SDKs) Enable Rapid Deployment of Advanced HD-DVD Applications

Sonic Solutions (NASDAQ:SNIC), the leader in digitalmedia software, today unveiled AuthorScript(R) HD-DVD Recorder andAuthorScript HD-DVD Navigator, the industry's first HD-DVD softwaredevelopment kits (SDKs). These two new AuthorScript SDKs enable PCapplication developers and consumer electronics chip, middleware, andsystem developers to rapidly integrate and deploy HD-DVD recording andplayback functionality in their high-definition video products.

"Sonic's AuthorScript HD DVD SDKs will allow developers to takefull advantage of the new format, including its robust interactivecapabilities," said Hisashi Yamada, Chief Fellow of ToshibaCorporation's Digital Media Network Company. "Sonic has extensiveexperience in delivering advanced DVD development tools, and is onceagain taking a leadership role in helping developers bring newproducts to market. I expect AuthorScript HD DVD will help broaden themarket for the HD DVD format, speed delivery of new HD DVD titles, andstimulate adoption of the format by content holders and consumersalike."

AuthorScript HD-DVD Recorder and AuthorScript HD-DVD Navigatoroffer a complete recording and playback solution for PC and CE systemand software developers looking to add HD-DVD capabilities to theirproducts. AuthorScript HD-DVD Navigator supports all playbackfunctions for HD-DVD titles, including trick modes such as fastforward, reverse and chapter selection. In addition, AuthorScriptHD-DVD Navigator supports iHD, HD-DVD's advanced interactivitytechnology, giving developers the ability to deploy next-generationHD-DVD PC and CE players that enable consumers to view and interactwith innovative HD-DVD titles.

AuthorScript HD-DVD Recorder supports data recording to HD-DVDmedia, allowing storage of up to 30GB on a single disc. It alsoenables recording of digital video and HDTV content to HD-DVD media.

"Sonic is committed to helping developers make the jump to HD-DVDtechnology as easily and quickly as possible by giving them earlyaccess to the industry's best tools and technology," said Jim Taylor,general manager of Sonic's Advanced Technology Group. "AuthorScriptsets the standard for DVD recording and playback technology, and welook forward to advancing the high-definition market by providing theessential components that our PC and consumer electronics partnersneed to create a broad spectrum of advanced HD-DVD products."

With the announcement of the HD DVD enhancements to itsAuthorScript product lines, Sonic continues in its industry-leadingrole developing technology solutions for disc-based delivery andstorage of digital media. Developers interested in receiving the newAuthorScript HD DVD SDKs should contact Sonic atauthorscript@sonic.com.

About Sonic Solutions

Sonic Solutions (NASDAQ:SNIC)(http://www.sonic.com) is the leaderin digital media software, providing a broad range of interoperable,platform independent software tools and applications for creativeprofessionals, business and home users, and technology partners.Sonic's products range from advanced DVD authoring systems andinteractive content delivery technologies used to produce the majorityof Hollywood DVD film releases, to the award-winning Roxio- andSonic-branded CD and DVD creation, playback and backup solutions thathave become the premiere choice for consumers, prosumers and businessusers worldwide.

Sonic products are globally available from major retailers, onlineat Sonic.com and Roxio.com, and are bundled with PCs, after-marketdrives and consumer electronic devices. Sonic's digital media creationengine is the de facto standard and has been licensed by majorsoftware and hardware manufacturers, including Adobe, Microsoft,Scientific-Atlanta, Sony, and many others. Sonic Solutions isheadquartered in Marin County, California.

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

Forward Looking Statements

The above paragraphs of this press release may contain forwardlooking statements that are based upon current expectations. Actualresults could differ materially from those projected in the forwardlooking statements as a result of various risks and uncertaintiesincluding, among others, the timely introduction and acceptance of newproducts, costs associated with new product introductions, thetransition of products to new hardware configurations and platformsand other factors, including those discussed in the Company's annualand quarterly reports on file with the Securities and ExchangeCommission. This press release should be read in conjunction with theCompany's most recent annual report on Form 10-K, Form 10-Q andRegistration Statement on file with the Securities and ExchangeCommission, which contain a more detailed discussion of the Company'sbusiness including risks and uncertainties that may affect futureresults. The Company does not undertake to update any forward lookingstatements.