RioVolt SP100 Portable CD/MP3 Player with 120 Second Anti-Shock Plays MP3, WMA, and standard audio CDs Listen to CD-R and CD-RW discs with more than 10 hours of music on them Can be upgraded to accommodate emerging audio-compression schemes Includes audio management software for PCs and Macintoshes Includes 8-function remote control and offers repeat and shuffle modes, adjustable equalization, and programmable playlists