I'm not familiar with the software but they are all pretty much the same. You have a track view that shows volume, key, port, bank, channel, patch, etc...just use GM bank for an example. First, you should try to play a demo that uses GM bank and different instruments. If your system is set up correctly, it will automatically, put the right instruments in the right tracks. You should have MIDI DEVICES somewhere on your menu...this where you set up the Port. If you have several instruments, they would use different ports. If you have one instrument, make sure it is listed. You need to be playing in MULTI mode (or whatever your synth calls it...read the manual). This allows the different instruments to playback. It sounds like you are not in Multi mode and that is why it is only playing back one sound.