Update at 4:17 PM CST As of 3:49 PM CST, Amazon AWS is fully recovered, and all services are operating normally.
Update at 3:12pm CST: AWS is delivering files again, and they're working on fixing uploads.
Amazon AWS, the service we (and a majority of online companies) use to host many of our files, is currently experience an outage. They are an incredibly reliable service, but when they have an outage, the entire Internet is affected.
Unfortunately, this includes Fireside by affecting the way that images will display (many won't) and mp3 downloads.
Amazon is working hard to fix the issue, and I'll post here again as soon as things are working again.
You can check Amazon's status here:
https://status.aws.amazon.com/
I'm very sorry for the trouble.
-Dan