Not for free that I'm aware of. If you're looking for radio only, the apps above are the best option I'm aware of. TuneIn radio only works for non-game broadcasts, and the channels get cut off during actual events (just to save you the time of checking, if you're ignorant about it like me).
If you use a slingbox ever, they do have a mobile app that can give audio only, but it costs and so do the boxes.