So you're not doing the keying but the computers are doing them. I suppose you still can, but will you?
Nah, thats what computers are for 
Actually, its the Arduino's that does the keying (encoding), the computer just sends commands and text via serial.
And yes, I can still key in Morse manually.
Morse input is either via a push button on digital input 7, or audio input on analog input 0
And yes my interface is more temporary breadboardish 
I just got a little into the coding of the stuff.