Well, since the 'M' key on the USB keyboard brings up the Rio Central's Menu, I tried pressing the 'E' key and that took me to the screen for editing the song that was playing at the time....

Randy
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Happy owner of 2 Centrals, 2 Empegs Mk2a 160GB, 1 Empeg Mk2a 60 GB, a Rio Riot, 4 Rio Receivers, and two 1GB iPod Shuffles...