Portable electronic storage and playback devices, namely, audio and video players, mp3 players, digital video recorders and players, portable solid state memories and portable disk drives; portable media players; digital storage devices, namely, portable solid state memories and portable disk drives; computer software for audio and video content management, distribution and playback; hardware and software for digital rights management; electronic storage and playback devices, namely, audio and video players; mp3 players; digital video recorders and players with digital rights management; portable media players with digital rights management; digital storage devices, namely, audio and video players, mp3 players, digital video recorders and players, portable solid state memories and portable disk drives with digital rights management; hardware and software for distributing digital content with digital rights management
Electrical and Scientific Apparatus