The quickest way to redirect your old podcast feed (or any feed or file) to a new feed is to create a HTTP 301 redirect. This is very simple to do. I used my favorite FTP application from Panic called Transmit. It’s Mac only but I’m sure other FTP apps can do this. Of course, this is all dependent on you having a server that will let you do this. I host with Dreamhost.com. If you’d like to sign-up with Dreamhost us the following promo code to get $50 off your first year of hosting: 50DOLLARS1YEAR

To set-up the .htaccess file follow the instructions below.

1. In Transmit, make sure the “their stuff” side of the window is selected and choose New File … from the File menu. When the new file is created name it “.htaccess” and then double-click it to open it. I have Transmit set to open most all of my text files in TextWrangler by Bare Bones Software. Any text editor will do.
2. Once the file is open, add the following code:
   Redirect 301 /oldfeed.xml http://www.yourdomain.com/newfeed.xml
   Where “/oldfeed.xml” is the path to your old podcast feed, and “http://www.yourdomain.com/newfeed.xml” is the full path to your new podcast feed.
3. Save your file and close it.
4. Open iTunes, right-click (or control-click) on your podcast in your podcast library and choose “Update Podcast.”
5. That’s it. Your podcast should update to the new feed.

Let me know if I need to clarify anything. I wanted to post this because I had a hard time finding this information on my own. I hope this helps someone.