I am setting this up for musicians, not podcasters, so I need to swap out a couple of the Audio Info options for Amazon Music, Jango, etc. I only found an .xml file but that wouldn't change the icons. Not sure where to look. Thanks for your help. 
Changing fields in Audio Info options on podcast layout
10 days later
mamadesign Hi
The extra fields for the JA Podcast template are defined in the following XML file: /templates/ja_podcast/etc/extrafields/podcast.xml
You can rearrange these fields as needed in that file.