Federico Viticci explains [Huffduffer](http://huffduffer.com), a great service that I’ve been using for, what seems like, years. Essentially, you create your own podcast feed with audio files you find online. I use it to pull single episodes from podcasts that I do not always listen to. I just put the podcast feed in [Reeder](http://click.linksynergy.com/fs-bin/stat?id=r*bqlTuiXSo&offerid=146261&type=3&subid=0&tmpid=1826&RD_PARM1=https%253A%252F%252Fitunes.apple.com%252Fus%252Fapp%252Freeder%252Fid439845554%253Fmt%253D12%2526uo%253D4%2526partnerId%253D30) and when I see an episode that looks particularly interesting, I add that to Huffduffer[^fn1].
[^fn1]: I, of course, have my Huffduffer feed loaded into [Instacast](http://click.linksynergy.com/fs-bin/stat?id=r*bqlTuiXSo&offerid=146261&type=3&subid=0&tmpid=1826&RD_PARM1=https%253A%252F%252Fitunes.apple.com%252Fus%252Fapp%252Finstacast%252Fid420368235%253Fmt%253D8%2526uo%253D4%2526partnerId%253D30)