Knowing that all of the feeds are living under the one domain helps, and should make the process a bit easier. For the feed URL you posted above, you'd want to edit the .htaccess file like this:
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^feed/podcast/paydirt-football-radio category/adr-radio-shows/paydirt-football-radio/feed/ [L,R=301]
RewriteRule ^index.php$ – [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress
You can add similar code for the other 11 feeds right under the first one. Just start each one with the RewriteRule ^ code and make sure it's followed by the [L,R=301] code. Also, note that you can leave out the top level domain from the feed URL's, and that there's a space between the old feed URL and the new feed URL.