FOR IMMEDIATE RELEASE

PREVIEW SYSTEMS UNVEILS NEW DIGITAL GOODS COMMERCE SOLUTION FOR APPLE
DEVELOPERS

New Tools Give Apple Developers a Solution for Creating Trial-Enabled
Applications and Facilitate Online Distribution

APPLE WORLDWIDE DEVELOPER’S CONFERENCE, SAN JOSE, CA – May 16, 2000 –
Preview Systems (NASDAQ: PRVW) is showcasing its new digital goods commerce
solution for the Apple Macintosh platform at the Apple Worldwide
Developer’s Conference this week.

The new Vbox Builder and SDK (Software Development Kit) for Macintosh,
which is part of Preview Systems’ ZipLock(tm) technology platform, enables
Macintosh software developers to create applications that feature
try-before-you-buy capabilities. It also enables developers to leverage
Preview’s network of resellers for selling and distributing software
electronically.

Preview Systems is also offering a free Sony Walkman Digital Music Player
(valued at US$ 450) when customers license Vbox Builder and SDK for
Macintosh. This promotion is available for orders placed and processed
between May 15, 2000 and May 31, 2000, or while supplies last. Full details
for this promotion are available online at
/vboxpromo/(http://www.previewsystems.com/vboxpromo/).

The Vbox Builder and SDK comprise a robust developer toolkit that protects
and securely packages software applications so they can be licensed and
digitally distributed over the Internet. Vbox Builder and SDK incorporates
software rights management and persistent digital security that gives
publishers flexible try-before-you-buy options along with complete control
over secure digital distribution.

“By providing full support for the Macintosh platform, we are giving Apple
developers a secure mechanism for electronically distributing their
applications,” said Dr. Vincent Pluvinage, CEO of Preview Systems. “We are
also giving retailers greater access to a wide range of software titles,
and we are helping publishers take advantage of new distribution channels.”

About Preview Systems
Preview Systems enables the secure electronic commerce of digital goods,
such as software and music, by providing an Internet-based infrastructure
that connects software publishers and record labels to their channel
partners and customers. The Company provides an infrastructure for secure
digital distribution of content that bridges multiple formats and multiple
Digital Rights Management (DRM) technologies. Preview Systems’ platform
also incorporates protection, delivery and management of the rights
associated with the usage of digital goods. Headquartered in Sunnyvale,
California, Preview Systems technology is used by a network of software
publishers, record labels, distributors, service providers, resellers and
hardware manufacturers. Preview Systems is publicly traded on NASDAQ under
the symbol PRVW.