The lawyers at Apple will be on the prowl but for at least know the Playfair website is back under a new name called the [Hymn-Project]

Purpose:"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."