Exhibit 99.1


           Sonic Solutions Reiterates Full Year Fiscal 2006 Guidance;
              Provides Quarterly FY06 Guidance for the First Time



    NOVATO, Calif.--(BUSINESS WIRE)--Aug. 15, 2005--Sonic Solutions
(Nasdaq:SNIC) today reaffirmed its fiscal year 2006 guidance for its
fiscal year ending March 31, 2006. Sonic continues to anticipate full
year fiscal 2006 revenues to be in the range of $155 million to $165
million and fully diluted earnings to be between $1.20 and $1.30 per
share.
    For the first time, Sonic is providing specific quarterly guidance
for each quarter of fiscal 2006. For its second fiscal quarter ending
September 30, 2005, the company anticipates revenues to be in the
range of $30 million to $32 million, and fully diluted earnings to be
between $0.09 and $0.11 per share. For its third fiscal quarter ending
December 31, 2005, the company anticipates revenues to be in the range
of $43 million to $47 million, and fully diluted earnings to be
between $0.42 and $0.46 per share. For its fourth fiscal quarter
ending March 31, 2006, the company anticipates revenues to be in the
range of $46 million to $50 million, and fully diluted earnings to be
between $0.54 and $0.58 per share.
    All guidance numbers provided in this press release are based on
generally accepted accounting principles (GAAP).

    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 premiere 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, and Roxio are trademarks
or registered trademarks of Sonic Solutions 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 under license.

    Forward Looking Statements

    The above paragraphs of this press release may contain forward
looking statements that are based upon current expectations. Actual
results could differ materially from those projected in the forward
looking statements as a result of various risks and uncertainties
including, among others, the gross margin, operating margin, effective
tax rate and cost of SOX compliance assumed for the guidance; the
continuing effects of the increase in operating expenses and headcount
in connection with the Roxio acquisition; and favorable expectations
about Sonic's consumer electronics strategy and ability to take
advantage of the convergence of the PC and consumer electronics
industries. These forward-looking statements involve known and unknown
risks, uncertainties and other factors that may cause the actual
results to differ materially from any future results, performance or
achievements expressed or implied by such forward-looking statements.
Important factors that could cause such differences include, but are
not limited to, Sonic's ability to successfully integrate Roxio's
Consumer Software Division and former employees into Sonic's business
and realize the anticipated synergies and cost savings from the
acquisition; general customer and market reaction to the Roxio
acquisition; the timely introduction and acceptance of new products,
including but not limited to Sonic's high definition series products;
the costs associated with new product introductions and the possible
adverse effect on gross margin; the transition of products to new
hardware configurations and platforms; unforeseen increases in
operating expenses as a result of the Roxio acquisition, new product
introductions, cost of SOX compliance or business expansion; loss of
significant customers due to the Roxio acquisition and other market
conditions; risks related to acquisitions and international
operations; and other factors, including those discussed in Sonic's
annual and quarterly reports on file with the Securities and Exchange
Commission. This press release should be read in conjunction with
Sonic's most recent quarterly report on Form 10-Q and Sonic's other
reports on file with the Securities and Exchange Commission, which
contain a more detailed discussion of Sonic's business including risks
and uncertainties that may affect future results. Sonic does not
undertake to update any forward looking statements.


    CONTACT: Sonic Solutions
             A. Clay Leighton, 415-893-8000
             clay_leighton@sonic.com
             fax: 415-893-8008
             or
             Market Street Partners
             Carolyn Bass, 415-445-3232
             Susan Coss, 415-445-3237
             investinsonic@sonic.com