PowerPress uses the tagline for the iTunes subtitle and iTunes description if you do not specify one in PowerPress settings. Go to PowerPress admin page and select the iTunes tab. Under the second heading titled "iTunes Feed Settings", customize the iTunes subtitle and summary settings. If you do not see the subtitle and summary settings in the page, scroll to the bottom of the page to heading titled "Advanced Options" and make sure "Advanced Mode" is selected. Don't forget to click 'Save Changes'.
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