I am learning to play the piano and I have bought an SX PR51 Digital Ensemble. I have downloade some midi filesbut found the main part of the file which I want to play is not using the piano sound. I have an AWE 64 Gold soundcard and tried to change the instrument through Voyetra Midi Orchestrator Plus. Whenever I save the file with the new instrument it plays back with the original. Can anyone help please??