Messed up audio track

Hey,
i was recording with audacity for 6 hours yesterday, the problem is that the last 2 hours of my track sound like this: https://www.youtube.com/watch?v=ITjCnZsNANM&feature=youtu.be
the first 4 hours sound ok but i need the whole file to sound good… i still got the .aup file. i just really need to know what to do here because this audio is important…
Thanks!

Anything in here?

http://manual.audacityteam.org/man/faq_recording_troubleshooting.html#skips

That’s help for preventing the next show from doing that. I don’t think you’re going to bring your damaged segment back.

There was another poster with a similar problem and I got it to be very slightly less bad by making copies of the show and then delaying them a bit so each one filled in the holes of the other. Someone else posted a special effect that did a similar job a little better. I’m looking for the posting. Neither of us is going to repair that to a studio recording or to match the rest of the show.

As we go.

Koz

thanks