You can now add the Podcorn prefix yourself in your SoundCloud Dashboard:
Login to your SoundCloud Dashboard
Click on Content Settings page
Click on RSS Feed
Enter our Prefix https://pdcn.co/e/ to your show under Stats services URL prefix
Click Save
And that's it! You can find additional information, along with the full guide here: https://help.soundcloud.com/hc/en-us/articles/115003564928-Adding-a-stats-service-URL-prefix-to-your-RSS-feed