In the interest of preventing a pile-on, I agree with Balu. I'm not saying the EP casts should never run a story that has been podcast before, particularly if the production wasn't great or they have a really different idea of how to do it, but too many reprints of podcast stories do start to bother me, while the same cannot be said of reprints from print markets. There are just so many more print markets out there!
I'm usually a bit disappointed when I realize I've heard a story before, and I usually don't listen to it again unless I really didn't like the production when I heard it before, or I don't remember until 75% of the way through. I'd make an exception for a really interesting audio production, but many of the audio reprints from audio haven't impressed me much.
Seems like a lost opportunity because I'd bet that readership overlap with the EA casts is pretty high for Drabblecast and fairly high for Clarkesworld, probably middling for Lightspeed and BCS. But even if not too many listen to BCS, it seems like there would be more overlap than, say F&SF.
Now, I don't listen to Dunesteef (always meaning to, but never get around to it) or Starship Sofa unless I get excited about an author. So I won't notice if a story was previously run on Dunesteef, but I can see the point if someone who listens to it was annoyed by a reprint. If I miss out on it, well I miss out on it because I didn't get around to Dunesteef (just like all the great stories I missed by slacking off on Asimov's last year), but if someone is raving about the story later or it gets an award nomination or something, a quick google search will reveal that Dunesteef produced it and I'll probably go over there and listen, and maybe that will be what finally got me into their podcast.
I'm not 100% "ARGH, never run reprints from other podcasts" but I have noticed there have been several of them this year, and consequently I've not listened to as many EA podcasts this year as usual. Which means I've caught up a bit more on other podcasts, thus perpetuating the cycle. You guys always do a great job with everything produced here, and I'll admit the quality on BCS and Strange Horizons has left me wanting more than a few times, so there is definitely something to gain from the occasional reprint, but I admit I've been a bit annoyed because there has seemed to be a cluster of them in this first quarter. (Not enough to love you guys any less though.)