Yes Dan, I can hear the midifile by doing what you suggest

But, I cannot SAVE any changes I make to the midifile in the normal way on the X4

When I midi the SD2 and X4 the X4 chooses different settings to what I have saved already on the midifile---It chooses mostly PIANO on all tracks
When I change them to the way i Like to hear them it will not Save or allow me to MUTE any instruments

Any help greatly appreciated Dan
Rusty