When entering notes in sibelius, they do not play. It dosen't matter if I use Kontakt player, GPO or GM voices. The notes are entered but do not play as they are entered. If I click on the entered note with the mouse, it plays. If I hit playback all notes play. Everything appears to be setup correctly.
What am I missing
Sibelius 3
Delta 1010
Ensoniq zr76
P4 3.4
2 gb ram