[LAD] Musescore "music trainer"?

Hello all, I was a Smartmusic (http://www.smartmusic.com) user until that program stopped working with wine. For those of you who don't know it, it is a program that basically downloads finale files (score + accompaniment) from a centralized server for musical instrument practice. When you play along it uses either MIDI input or a microphone to rate your perfomance (which notes you played in tune, and so on). As far as I know, there is no native Linux or open source alternative. My questions are: Do you think it would be hard to code a plugin for musescore (http://www.musescore.org) to do the same pitch detection and comparison with the score? Or maybe would it be better to fork the code and make a stand-alone app, keeping it as compatible as posible? Any experience with pitch to midi? aubio (http://www.aubio.org) could be an option, but I haven't tried it. I think the music repository part could be addressed later... I don't have much time right now, but I'd like to ponder the posibility of working on it in the future. Maybe start experimenting in the meanwhile. Just an idea, Greetigs, Camilo