Radio Roku contains the correct stream URLs for CBC Radio One as listed on http://www.cbc.ca/listen/includes/directr1.html
. I tested several URls in different software players and they worked A/OK.
Unfortunately it looks as though CBC now streams AAC+ (HE-AAC) which the SoundBridges can't handle.
Otherwise, is there any to directly point the Soundbridge to a known stream url?
Open the "Presets" page of your Soundbridge's web interface with your browser. The address is http://xxx.xxx.xxx.xxx/SoundBridgePresets.html
(where xxx.xxx.xxx.xxx is the IP address of your Soundbridge). Then type or paste the audio URL that you wish to submit into a preset of your choice (location C6 usually is a good choice) and press the corresponding "Play" button.