Cleaning up audio (wind, camera noise)?

I made two mistakes in filming my recent movie:
1) I forgot to turn on the wind shield on my camera for a couple of the outdoor scenes, which resulted in a low rumbling of wind that tends to overshadow the dialogue, and
2) My camera's microphone is located at the bottom front, and in the first few days of filming when I gripped the camera body, a finger or two was covering the mic. The result was a tinny sound (probably the camera motor) that tends to mute the dialogue.
I was wondering what I can do to try to clean these things up. In the past, I've used Audacity to clean up audio, but I wanted to know if other solutions exist. Thanks.

Hi Jim - it's me again!
You might like to have a look at SoundSoap (but it's not free). I've heard good reports about it. Although, apparently when removing background sounds (such as wind) other sounds (like voices) can sometimes be distorted or muffled by the process. This applies to most products like this. So things may end up sounding worse. It's probably a matter of trial and error.
Here's the link:
http://www.bias-inc.com/products/soundsoap2/
John

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