Pandora works fine, but internet radio does not.

When I connect to sky.fm or radioio stations, I can play a stream for 3-4 seconds; the status bar times it down. Is there a setting somewhere that I'm missing?

What I really want to accomplish is to use Squeezecenter to stream music from my home network. I can play 3 seconds of a stream from home but then it shuts off and the card goes white.