Music Companies Bemoan New High-Cap Portables

An anonymous reader writes "New Scientist reports: 'The music industry this week condemned the launch of two recording systems that will let people copy between 30 and 100 hours of music onto a single disc.'" The Sony system is supposed to use "ultra-efficient data compression system used in MiniDiscs" to fit "30 hours of MP3 music" on a CD-R. (I thought MD used ATRAC rather than MP3, and that ATRAC's standard bitrate was 285.3 Kbps -- can some MD gurus bring us up to speed?) Philips' system skips CDs, and instead uses a DVD burner, with the resulting disks playable in a to-be-released portable player. I wonder what kind of DRM features the companies will use to cripple each system.