Audio Only Quality Settings
To view the settings for a preset Audio Only profile, click its title from the File Format Profiles page.
Note: settings for preset profiles cannot be changed.
To create a new profile, click the Copy profile link for one of the existing options.
Profile The name of this audio profile. Audio Format The format of this profile. Options are MP3 and WAV. Audio Bitrate The approximate bitrate (bits per second) for this profile. Note: this option will not appear if the Format selected is WAV. Audio Sample Rate The sample rate of this audio profile. Once you are finished editing the profile, be sure to click the Save button.