I have a DAW system with a MIDI keyboard for musical input. It also has a hardware synth ("ROMpler") module in the chain. The keyboard is a Roland A90EX, and the synth is a Roland JV-2080. The way I've got it hooked up is as recommended in the Cubase "Getting Started" book: Keyboard MIDI OUT to the M-Audio Fast Track Ultra USB interface MIDI IN, the interface MIDI OUT to the keyboard MIDI IN, and the keyboard's MIDI THRU to the JV-2080's MIDI IN. I am not getting any sound from the JV, which leads me to believe that maybe the keyboard's MIDI THRU port is either disabled, or isn't working. I can't seem to find a way to turn it on or off in the keyboard's user manual. Once I've got this straightened out, I think I'll have all my MIDI problems fixed. The DAW is another story, but I'm working on this, and things are getting better all the time. Does anybody have any ideas with how to fix this? Thanks.