A human being can't live without oxygen, so we said we are surrounded by aerosphere. Also, a modern society can't exist without information, so we said it is surrounded by sound and visual mediums. At this moment, we eventually recognized the MP4 as the mostly used sound and visual medium.
Why said that MP4 is the mostly used one? I bet everybody have ever experienced watching and listen to movies and music on a portable media player like an iPod , a PSP, a mobile phone, or a Zune and so on... read more
