chikitin - Did you ever resolve this issue? I'm having the same problem....
Hi Llbeck02,
This problem (message that a MIDI song is copy protected) occurs if you first loaded / played one of the internal demo MIDI songs and then made your own MIDI recording without first initializing the song memory (so that instead of the song name "New Song", i.e. a new blank song, is displayed).
With Tyros, PSR-S and older CVP models (up to CVP-509) you press the Song Stop and Record buttons at the same time, with Genos and PSR-SX models you press the "New" icon in the "MIDI
Multi Recording" display. (In "MIDI
Quick Recording" mode, a new blank song is usually created automatically when this display is opened.)
With the CVP-609/709/809 you have to press "New MIDI" in the "Song Recording" display to initialize the song memory.
By the way, I am not aware of any possibility of subsequently removing such a copy protection from a MIDI file.
Best regards,
Chris