Dean, thanks for the explanation.

If I understand correctly, if I pasted the above command, %38%33%34%35%31%31%44%39, into the controller, despite not seeing anything but this exact set of characters, it may work? Or, putting the characters ƒEÙ may work?

Is there any way to know if my controller sends the correct command (either of the two commands above, for MUTE) without actually seeing a change in the characters displayed in the controller?

Thanks...

(BTW, happy 2006!!!!)