Need help fixing audio that is clipping

I got some footage from someone else, it was a single speaker with a wireless, but the wireless was a little too hot and was clipping occasionally. This audio is just over the borderline of being acceptable...it's close. The audio was also recorded on another tape where it was not getting clipped, but the whole video is 15 hours long, and I really don't want to have to go in and capture all that video...it's a lot of work I'm trying to avoid because I don't have the time to spend on that.

I don't know much about Soundtrack Pro...just really basic stuff. I have used Adobe Audition in the past, but don't have that any more. Can someone help with what filter to use and possibly what settings to play with? I'm not looking for this to be perfect audio, but if I could just get it under the borderline of being acceptable, that would be great!

Thanks!
Casey