trying to manually enter midi notes in AI. they show up as white and dont sound on playback. But they are still there in white. I dont see see any mute on anywhere. I tried regular and solo...i tried save... still wont play .. whats up??

AFAICT white notes are muted notes, apparently you should be able to just un-mute them (Mute tool?) and they should play.. If that doesn't do it, maybe something in the course attached above on MIDI Recording & Editing in Cubase will provide the answer..