There is no way to repair that recording, there were problems associated with it. Having been a live recording not something processed in a recording studio with multiple takes.
The best way to work with it is to tell yourself it won't affect you and just listen anyway. The way I see it the background noise is there for a purpose. To help us learn grow beyond minor irritations. What better way to do learn that than to work through the recording as it is?
AlexK
