The Picasa product is licensed to you under a specific agreement
which you will be required to agree to when you first run Picasa.

The Software contained in this product includes some components of 
Free and Open Source Software, including software from the Wine 
Project, the FreeType library, the Mozilla browser, xdg-utils,
xdg-user-dirs, and the Bitstream Vera truetype fonts.

We are deeply grateful to the authors and owners of all of these 
software projects for allowing us to use their software.  With some of 
these, you also may have further rights, particularly to receive 
source code of those projects, refer to the details below for further
information.

The Wine project is licensed under terms of the GNU Lesser General 
Public License, which is included with the software in a file called
LGPLV2. On Debian-based systems, this file is included with your
operating system as /usr/share/common-licenses/LGPL-2.1. This license is
also available online at:
http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

The best source for the Wine source code is the main Wine web page:
    http://www.winehq.org.

The FreeType Library is released under the FreeType license, which is 
similar to a BSD license.  More information about FreeType is best 
found at www.freetype.org.

The Mozilla browser is licensed under the Mozilla Public License.
The control is distributed in binary form, unmodified.  Please refer 
to this web page for more information:
    www.mozilla.org

Your best bet for more information on xdg-utils and xdg-user-dirs is the
www.freedesktop.org web site which hosts that project. The xdg-utils
project is licensed under the terms of the MIT license, which is
included in a file called LICENSE in the xdg-utils directory. The
xdg-user-dirs project is licensed under the terms of the GNU General
Public License, Version 2. A copy of this license is provided in a file
called GPLV2. On Debian-based systems, this file is included with your
operating system as /usr/share/common-licenses/GPL-2. The GPL can be
found online at: http://www.gnu.org/licenses/old-licenses/gpl-2.0.html.

The Bistream Vera TrueType fonts are provided, unmodified, under a
generous license from Bitstream.  More information can be found at this
web site: http://www.gnome.org/fonts/.

Most of our changes to Wine have already been applied to the main wine
tree at http://www.winehq.org. You can get a full archive of all the
open source used for the released version of Picasa at:
http://dl.google.com/linux/src/picasa-current.oss.tar

To source archives for previous releases can be found at:
http://dl.google.com/linux/src/picasa-<version>.oss.tar
where <version> is the Picasa for Linux release you are interested in
(e.g. 2.2.2820-5).

However, with all Free and Open Source Software, we have an internal 
policy of making sure that all of our changes are returned to those 
projects, so their respective home pages are generally the best place 
to obtain source code from.
