Do you have a mixer (which would allow hearing both at once)
If not, it should be your first investment, or you can record the Yamaha back in as audio, as described above, and then use the computer to monitor through.

The USB connection only carries MIDI data to the Yamaha, telling it which notes to play, when to play them, for how long, etc (again; MIDI is not sound, the Yamaha makes the actual sound)

You still have to get the audio (sound) from the Yamaha back to the computer..

You have a situation where you can
A. Use computer for MIDI sounds and Audio sounds (of which realtracks will be audio). You would not using Yamaha at all this way

B. You can use a mixer to hear the Yamaha and the computer at the same time.

C. You connect the system like I suggested; Midi (USB in your case) going out of computer to the Yamah so it creates the MIDI sounds, and an audio cable going from the Line Out of the Yamaha back into the Line IN of the computer so you can 'hear' the Yamaha sounds through the computer.

Using C. what happens is you hit 'Play' and Realband will send the MIDI data to the Yamaha whch in turn creates a sound.. then that sound is routed back to the computer through the aforementioned audio cables (Line Out/In) so you can hear it.
This is the cheapest way to accomplish what you need. Question is - what do you hear the sound from the computer through? Speakers? Headphones?

Last edited by rharv; 01/03/12 06:24 PM.
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