Not sure what your question is exactly. I render songs with real tracks and midi melody all the time. The .wav real tracks are included, but the melody will play all the way through. I'm using a hardware synth which is what I want to run the melody through as it is being rendered. You might want to check out Real Band. Sometimes I record the melody to an audio track and then do a mix of audio tracks to a single audio file in Real Band. Is this what you are looking for?

Stan


Cornet Curmudgeon