The purpose of hymn is to allow you to exercise your fair-use rights
under copyright law. It allows you to free your iTunes Music Store
purchases from their DRM restrictions with no sound quality
loss. These songs can then be played outside of the iTunes
environment, even on operating systems not supported by iTunes. It
works on Mac OS X, many unix(-ish) variants and on Windows.

The Mac OS X version includes a drag-'n'-drop graphical user interface
(GUI). The other platforms have only a command-line interface (CLI) at
this time. Prebuilt binaries are available for both Mac OS X and
Windows, and the source code is available for all platforms.

This program is protected by the GNU General Public License.

   "The primary objective of copyright is not to reward the labor of
   authors, but [t]o promote the Progress of Science and useful Arts."
   "To this end, copyright assures authors the right to their original
   expression, but encourages others to build freely upon the ideas
   and information conveyed by a work. This result is neither unfair
   nor unfortunate. It is the means by which copyright advances the
   progress of science and art."
           -- US Supreme Court Justice Sandra Day O'Connor

Despite what Justice O'Connor has said, DRM exists. The purpose of DRM
is to circumvent traditional copyright law. The result of DRM combined
with laws that outlaw circumvention of DRM (such as the DMCA is that
there is no longer protection for fair use.

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Read the INSTALL file for installation instructions.

Check the doc directory for more documentation.

http://hymn-project.org/
