If you are not an iTunes user, finding podcasts that need iTunes to download is very annoying especially if you don’t want to waste 70 MB just to get access to a podcast. Since most podcasts don’t distribute a RSS feed link, subscribing is made very hard unless you use a RSS feed extractor.
Podcast URL Extractor uses search terms or the original iTunes link and finds or creates a RSS feed that can be used in iTunes alternatives. The resulting RSS feed can then be used in other programs to access the podcast.
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FYI, if you want to be able to include such functionality in a Ruby project; I had written a gem that can be found here:
https://github.com/RLovelett/imasquerade
Thanks for sharing your Ruby project!