I'm not really sure what to call this type of software (I think it is Flash based), but it has been used here on the forum before in the Rimsky-Korsakov Orchestration course. I'm not even sure it is a software, but what I'm looking for is to have some sort of cursor follow a scanned score in sync while the music plays. So, basically, the user can see the written music in real-time as the music file plays. Here is a link to what I am referring to:
Can anyone please tell me how this is done? Thank you for your time!