I want a device that I can plug into my stereo, which provides sound to my entire house, that can use the Pandora app. I don't want to use my phone or my ipad because my house is large and the stereo is in a location that is out of the way. I want to pay less than $100 and was thinking about getting a used Eris or ipod touch, but those are still fairly expensive. I'm not interested in purchasing something on contract either. Any advice?