Enhancing audio

[Whiskey]

In regards to my thread in SC here, I was wondering if there was any software to enhance a background voice. My phone records all phone calls I make and receive but unless its on speaker, you can barely hear the other person on the line. I would really love to email this audio recording to my local paper and see what they think of managers finding physical assault (or threats thereof) completely acceptable.

[Bandit]

Audacity is a good (and free) audio editor that is easy to use.

B