http://korgforums.com/forum/phpbb2/viewtopic.php?t=64511&sid=be6056e74e24a1aafb6e8717a11dcf07


Hi,....
did you buy this KB USED? I remember installing an MP3 card optionally on my KORG Pa800.....
on the Pa3x the MP3 player should be included?

Double Mp3 Player and Mp3 Recorder
Two Mp3 files can be played simultaneously in Song Play Mode
Real Time Transpose (+6/-5 semitones)
Tempo change (±30%)
Advanced Vocal Remover Record MP3 files including Styles, SMF, Real Time Tracks, Pads, Microphone and Effects
Audio Chord detection for Vocal Harmony


I would contact the seller immediately
to find out if they had the same problems previously before selling.
good luck to you.