When selecting video encoders you can also select the desired audio encoder. You can choose between OGG Vorbis and WAV:
Press the setup button of the audio encoder. If you have selected the WAV encoder, the following dialog appears. Here you can select the sample bit rate and frequency in Hz:
Having defined the OGG Vorbis encoder, the following dialog appears:
Here you can select whether you would like to use managed or quality variable bit rate, or a constant bit rate.
Then set your target bit rate to the desired quality using the scroll.
Making OGG Vorbis Encoder Remote
In order to place the encoding on a remote machine, do the following:
Select the "Compress on a remote server" option.
Set up the ID of the remote machine where you want to run the encoder.