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Portable media player
A portable media player (PMP) or digital audio player (DAP) is a portable consumer electronics device capable of storing and playing digital media such as audio, images, and video files.〔(【引用サイトリンク】title=What is DLNA )〕〔() What are the differences in DLNA device classes?〕 The data is typically stored on a CD, DVD, flash memory, microdrive, or hard drive. In contrast, analog portable audio players play music from non-digital media such as cassette tapes, or records.
Often mobile digital audio players are marketed and sold as "portable MP3 players", even if they also support other file formats and media types.〔(The Difference Between an iPod and a MP3 Player ). Webopedia.com. Retrieved on 2013-08-16.〕 Increasing sales of smartphones and tablet computers have led to a decline in sales of portable media players,〔(【引用サイトリンク】title=Smartphones Heavily Decrease Sales of iPod, MP3 Players )〕 leading to some devices being phased out, though flagship devices like the Apple iPod and Sony Walkman are still in production. Portable DVD players are still manufactured by brands across the world.〔(【引用サイトリンク】 title=Portable media players give North Koreans an illicit window on the world )〕
This article focuses on portable devices that have the main function of playing media.
==History==
The immediate predecessor in the market place of the digital audio player was the portable CD player and prior to that, the personal stereo.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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