ATRAC
Videos
Adaptive Transform Acoustic Coding is a family of proprietary audio compression algorithms developed by Sony. MiniDisc was the first commercial product to incorporate ATRAC, in 1992. ATRAC allowed a r
An ATRAC3plus CD playing on a Sony car stereo.
Rockbox
Videos
Rockbox is a free and open-source software replacement for the OEM firmware in various forms of digital audio players with an original kernel. It offers an alternative to the player's operating system
An iPod Nano showing a grayscale "Do Not Disconnect" screen from the iPod Mini series with a new screen on the iPod Classic, although it is bundled with the Rockbox package