There’s a way to subscribe to podcasts without having to install iTunes on your PC or Mac. But, some podcasts only provide an iTunes link for subscribing to their podcast. Very inconvenient to have to go into iTunes to find the “Copy Podcast URL” menu item on a right-click. Here’s several ways to get the actual RSS feed for a podcast via web apps:

iTunes Podcast URL Extractor http://snipplr.com/view/52465.64822/ for the self-install PHP code

http://picklemonkey.net/flipper/convert.php – dynamic in-line converter

iTunes feed extractor – self-install Python code 

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#!/usr/bin/env python

import plistlib
import urllib2
import sys

ITUNES_VER = '7.4.1'

USER_AGENT = 'iTunes/' + ITUNES_VER

def get_props(url):
    request = urllib2.Request(url)
    request.add_header('User-Agent', USER_AGENT)
    response = urllib2.urlopen(request)
    return plistlib.readPlistFromString(response.read())

def get_feed(url):
    props = get_props(url)
    return props['items'][0]['feedURL']
    
if __name__ == '__main__':
    for url in sys.argv[1:]:
        print get_feed(url)