Hi Norman !
I downloaded your Rousseau application for Mac OSX and it works wonderful. It recognises my iReal library and let me edit without problems. I used it for adding a few notes at the start of songs for helping me remember the beginning fast and then continue from memory... I could do it directly in iReal but it's very fun to do it in your app (you can hear the notes!)

Rousseau for OSX

Thank you very much
cronban