The Rio PMP300 was one of the first portable consumer MP3 digital audio
players, and the first ... of America, filed an application for a Temporary
Restraining Order to prevent the sale of the Rio p...
Diamond's Rio PMP300 is the first portable MP3 music player for under $200 that
stores up to 60 minutes of digital-quality sound. It's smaller than an audio ...
Oct 25, 2010 ... Apple's iPod was not the first portable MP3 player. Diamond Multimedia's Rio
PMP300 wasn't either — it was the third — but it's widely ...
Additionally, files using MP3 compression can be played on portable hand held
devices such as the Rio PMP300 music player ($199) which can store up to sixty