I am able to successfully record and playback midi from and to the keyboard (DGX-620), but this is the problem: when a voice is choosen to record, like the beautiful Cool Galaxy 009, including the bank and program change data, the sound coming from the keyboard during midi playback is not Cool Galaxy but rather a different sound that is lower in quality and sounds like a cheeper keyboards GM voice. (probably also a voice named 009 but from some different bank. How can I play back a midi solo with the Cool Galaxy voice?