So if you pop in a DVD "infected" with Protect DVD-Video, it can't be read by Windows Media Player, Media Center Edition, or any DirectShow-based software, thanks to a Universal Disc Format that tricks your machine into believing that the IFO file is zero bytes long.
All of three run on the Windows Mobile 2003 Second Edition operating system and come with the new mobile version of Windows Media Player 10 pre-installed (but you can use it to listen to stuff besides Joss Stone).
Last year, Microsoft was forced to release a bowdlerized version of its Windows XP software, later named Windows XP Home Edition N--the 'N' in the new name standing for "not with media player".