Originally posted by LIONSTRACS:
Is also installed the Musescore:  http://musescore.org/  
No emails at all from you. Maybe is better that let me know your email that I can edit my spam filter
thanks
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Sent by IphoneAhh... that's the one I was thinking of. 
All good programs but none are designed for displaying sheet music on the fly.
For a long time I've been developing my own program, but I've kind of stopped because there wasn't too much interest in it. 
Here's a few screen shots of it. It's designed for use with Touch Screens in mind.  
  
  