Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
As @makaiguy said, install myTuner Radio on your Roku device. Then just search after app/channel is installed and search for "the roots hd". (this is the roots.fm station). Free form Rock United States.