Update CMakeLists.txt

CMakeLists.txt

@@ -3,7 +3,7 @@ project(arm9_music_editor)               # Create project "arm9_music_editor"
 set(CMAKE_CXX_STANDARD 14)            # Enable c++14 standard
 
 # Add main.cpp file of the project root directory as a source file
-set(SOURCE_FILES main.cpp)
+set(SOURCE_FILES music_table_editor.cpp)
 
 # Add executable target with source files listed in SOURCE_FILES variable
 add_executable(arm9_music_editor ${SOURCE_FILES})