A new MP3 form with 5.1 ch Surround sound has been shown.
"MP3 Surround allows the reproduction of high-quality multichannel sound at bit rates comparable to those currently used to encode stereo MP3 material. Most importantly, the new format offers complete backward compatibility to existing MP3 software and devices: MP3 Surround bit streams are played back as high-quality stereo sound on all current MP3 players. When decoded by MP3 Surround decoders, however, the new format produces full 5.1 channel surround sound!"
Read more at http://www.mi2n.com/press.php3?press_nb=63979
"MP3 Surround allows the reproduction of high-quality multichannel sound at bit rates comparable to those currently used to encode stereo MP3 material. Most importantly, the new format offers complete backward compatibility to existing MP3 software and devices: MP3 Surround bit streams are played back as high-quality stereo sound on all current MP3 players. When decoded by MP3 Surround decoders, however, the new format produces full 5.1 channel surround sound!"
Read more at http://www.mi2n.com/press.php3?press_nb=63979