With a spate of Personal Video Player's just around the corner - check out the new archos AV400 line for example.. http://www.archos.com sweet! anywho, implementing 5.1 surround and such through standard headphones is here aswell! by just including an extra audio stream with DVD's which is processed with software which utilieses certain physcoacoustic properties of the human auditory system, surround sound can be chanelled thru normal stereo headphones! check out this clip to hear how a standard mp3 clip can be processed to give a surround sound effect thru normal stereo headphones!! listen through headphones what do you think of that?