Rearranging tracks in your RSS feed
Tracks are arranged chronologically in your RSS feed, like they do on your profile, with your latest uploads at the top. There is not a way to rearrange your tracks in your RSS feed. As a workaround, you can delete and upload your podcast’s episodes in the desired order.
Please note: If you delete and reupload your episodes, it may take iTunes up to 24 hours to reflect these changes in the iTunes store.