The data is typically stored on a compact disc (CD), Digital Video Disc ( DVD), Blu-ray Disc (BD), flash memory, microdrive, or hard drive most earlier PMPs used physical media, but modern players mostly use flash memory. From left to right: Sony's Walkman A810, and Apple's iPod Nano (5th generation) - two flash memory type PMPs from the late 2000s.Ī 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.