With these two new add-ons, you can now listen to your MP3's or read RSS feeds (including BlenderNation! ;-) from inside Blender!
Between developing Sverchok, F2, QQads (coming soon from Alexander Nedovizin), blender-addons developers relaxing by trying to make Operating System's shell from blender.
First came RSS feed reader, that made by Nikolay Fomichev. It is 2.5 blender addon, old one. Situated in World properties.
Second is a music player for Blender, made by edddy and some developed by nikitron. Situated in 3D toolshelf in NT tab.