but they "should" just open when double clicked. The software to do this is already loaded as part of OS X.
Try the free Stuffit Expander if all else fails.
Where did this file come from ? It is a little unusual to come across one
I have a dmg.spanned file on my Macbook that I am trying to open but it asks me to choose an application to open it with which I don't have.
Could anyone tell me what I should download and install in order to open my dmg.spanned file?