Hi,

The KN-7000 is more than just an mp3 player like Kenneth is using it on Youtube. He actually start the mp3 song and play along live with a piano sound. No auto chords and no MIDI sequence there.
If you use SD Audio Synchro in the sequencer, you can synchronize any mp3 with the MIDI file on board. This is pretty useful, for example, when you want some back vocals to sing along with you live.
And the KN remembers wich mp3 file go along with the specific MIDI file.

Serge