The Rio PMP300 is one of the first portable consumer MP3 digital audio players, and the first commercially successful one. Produced by Diamond Multimedia, it was introduced September 15, 1998 as the first in the "Rio" series of digital audio players, and it shipped later that year.
The Rio PMP-300 portable MP3 player. The top view shows the face of the player. The bottom view shows the edge of the player (including its proprietary connector) and the included parallel-port adaptor.
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. The data is typically stored on a compact disc (CD), Digital Versatile Disc (DVD), Blu-ray Disc (BD), flash memory, microdrive, SD cards or hard drive; most earlier PMPs used physical media, but modern players mostly use flash memory. In contrast, analogue portable audio players play music from non-digital media that use analogue media, such as cassette tapes or vinyl records.
Two flash memory type pocket-size PMPs: Sony's Walkman A810 and Apple's iPod Nano (late 2000s)
A larger sized, hard disk memory type PMP: the Archos 605 (2000s)
A small DAP: the SanDisk Clip Jam (2010s)
A flash-based player (Creative MuVo)
