You need version 0.6.4 to get the note names.
There is test version for the mac available in this thread
http://piano-booster.2625608.n2.nabble.com/Pianobooster-0-6-4-Universal-Binary-for-OSX-10-6-tp4609494p4609494.htmlI don't have a mac and so dependant on others to do the build.
There were three possible issues with the mac build.
1. font corruption (i think Joes build fixed this).
2. Video flickering (may be fixed by turn off the video optimisation on the pionobooster setup/preffs menu)
3. Then the keyboard input is disabled - Joe is this still an issue see you post below
http://piano-booster.2625608.n2.nabble.com/Pianobooster-0-6-4-Universal-Binary-for-OSX-10-6-tp4609494p4664443.htmlPlease report back how you get on and it it works OK for you.
L.