JCatcher
This is a simple 3DS program that's designed to parse RSS feeds and download mp3s so that they can be played by another app. Currently nearly all the features are working except for the onscreen keyboard, so your stuck with Offbeat Oregon as your only option. Also, apparently, I started this before I knew to split things into their own files. Enjoy a horrific main.cpp, and not much else.
Also, this program uses curl, which means that while it supports modern HTTPS certs, it is dreadfully slow. Probably runs at 1/3 playback speed. So a 15 minute podcast could take up to 5 minutes to download. This is obvisouly unacceptable for real-world use, but this is just a passion project. Also, I see no way around it.