It has been completely borked in Google Listen. No Mixergy updates in 2 weeks now, which is unfortunate, as I often listen to podcasts while commuting. ITunes has been working for me though.
Sorry. We can't seem to get it back up, but we're working on it.
I hired a wp company to figure out what's going on and straighten it out.
I'm glad you're looking into it. I tweeted about it to you but didn't hear back and wasn't sure if it was a technical problem or a business decision. (though odd since the video feed seemed fine)