If you're getting the stream blocking message from Radionomy when you try to play your app in the US, you can correct this by logging into your account and refreshing the connection to your stream(s).
Please follow up with our support team if this still is not corrected for you.
NOTE: We are aware that a small number of iPhone users are still not able to connect even after this refresh. We have brought this to Radionomy's attention and are waiting for a correction.