1) SOMEONE can't spell "accessible" 2) Global commenting consistency 3) persistance -> persistence

src/SongManager.cpp

@@ -36,7 +36,7 @@
 #include "UnlockManager.h"
 #include "SpecialFiles.h"
 
-SongManager*	SONGMAN = NULL;	// global and accessable from anywhere in our program
+SongManager*	SONGMAN = NULL;	// global and accessible from anywhere in our program
 
 const RString ADDITIONAL_SONGS_DIR	= "/AdditionalSongs/";
 const RString ADDITIONAL_COURSES_DIR	= "/AdditionalCourses/";