I played music from Pandora through my Nintendo Wii and out of the sound system attached to my television. The audio came from the Pandora tab in Firefox, to my sound card, back in through the Stereo Mix, into the BroadWave streaming server, over my local wireless network via HTTP, into the Internet Channel on the Wii, through my television, and out through the sound system.
My website: http://davidtsai.net63.net/ (changed since I made the video)
The Facebook Automatic Poke Returner is under the “Programming” category.
BroadWave Audio Streaming Server: http://www.nch.com.au/streaming/index.html
Note that the page says that the software is free if you add a link back to their website.