MP3ManNT - MP3Man offers the feature to up-/download files from the Rio player to the PC.

MP3Man gives you a centralized control for transferring files to and from the Rio PMP300 and Rio SE players. Use it to view the contents of the internal and external flash memory on the Rio player, download MP3s and any other files to the flash memory of the Rio player, and upload MP3s and any other files from the Rio player to PC. In this way you can use your Rio player to transport data from one PC to another. You can also delete files from the flash memory of the Rio player, Create playlists of files for fast and easy downloads, change the play order in your Rio player, and initialize the flash memory of the Rio player. This edition of MP3Man doesn`t support the Rio 500 with USB. A version for W95/98/ME is available.