I use Sametime Unyte for web conferences at work. Unyte allows you to record your teleconferences (slides and audio), and you can download a ZIP containing Flash video after your session.
I usually extract the audio track and publish that as a separate MP3 so that people can listen to it. I can also have the audio file transcribed. The audio track from Sametime Unyte is of lower quality than my voice recorder, but it’s a good backup and it captures both sides of the phone conversation.
Here is one way to extract the audio using Linux:
for FILE in *.swf; do ffmpeg -i $FILE -ab 64k $FILE.wav; done
Then you can concatenate all the WAV files:
sox *.wav all.wav
Then you can use Audacity to edit the resulting file.