rioutil is a utility designed for the use of interfacing with Sonic
Blue/dnna's third, fourth, and fifth generations of flash MP3 players
(Rio 600/800/900/S-Series/Riot/Cali/Chiba/Fuse and Nike psa[play).
On many players, it goes beyond the packaged software by providing
downloading.

WWW: http://rioutil.sourceforge.net/