The use of procedures set switch box , or in many software tools for multimedia players have such a function.
利用程序进行开关盘盒，在很多软件或多媒体播放工具中都有这样的功能。
Portable multimedia players (PMP), which is usually known as the MP4 has become a consumer products of a new hot spot after MP3.
便携式多媒体播放器(PMP)，也就是通常人们所说的MP4，已成为继mp3以后消费类产品的一个新热点。
Portable multimedia players (PMP), which is usually known as the MP4 has become a consumer products of a new hot spot after MP3.
便携式多媒体播放器(PMP)，也就是通常人们所说的MP4，已成为继mp3以后消费类产品的一个新热点。
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