From Digital Networks:
Rio 500 is a portable digital audio player that stores up to two hours of digital-quality music and up to 32 hours of spoken audio programs. Rio 500 is also the first portable digital audio player to support both the Macintosh (iMac) and Windows 98 platforms! Access thousands of music and audio files at RioPort.com and over 16,000 hours of Audible.com audio programs (Audible.com support coming soon). Instantly create, customize and mix your favorite music and audio selections on your PC or Mac for playback on your Rio. Rio is the perfect companion for active people - delivering skip-free music and audio for people on the go.