I also use Audacity and very much enjoy it. My Audio Holotape tutorial covers some of the dialogue/voice sound procedures if you need any of that.
Cheers,
Miax
Excellent tutorial. It helped me a lot and filled the gaps between Audacity, Lip Template and getting new voice files into the GECK.
I also recommend Audacity. I had no clue how to do anything before I DL'd it and it's very easy to use.