To change the file association right click the MGU/SGU file and select Get Info. In the "Open with" section make sure you select your Band-in-a-Box application with the black/gold logo. This should be inside of your Applications/Band-in-a-Box folder. Then click the "Change All" button so that the MGU/SGU file type is always opened by your Band-in-a-Box when you click on it.


Best,
Chantelle